./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:13:58,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:13:58,632 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:13:58,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:13:58,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:13:58,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:13:58,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:13:58,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:13:58,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:13:58,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:13:58,695 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:13:58,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:13:58,696 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:13:58,697 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:13:58,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:13:58,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:13:58,699 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:13:58,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:13:58,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:13:58,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:13:58,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:13:58,701 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:13:58,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:13:58,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:13:58,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:13:58,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:58,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:13:58,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:13:58,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:13:58,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:13:58,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:13:58,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:13:58,707 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:13:58,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:13:58,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:13:58,708 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:13:58,708 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e [2023-11-06 22:13:58,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:13:59,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:13:59,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:13:59,029 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:13:59,030 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:13:59,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2023-11-06 22:14:02,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:14:02,800 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:14:02,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2023-11-06 22:14:02,852 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/data/f9b6feac4/757f23a21ab74006838a942cd619c12f/FLAG5043ae7c5 [2023-11-06 22:14:02,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/data/f9b6feac4/757f23a21ab74006838a942cd619c12f [2023-11-06 22:14:02,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:14:02,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:14:02,884 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:02,885 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:14:02,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:14:02,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:02" (1/1) ... [2023-11-06 22:14:02,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27944062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:02, skipping insertion in model container [2023-11-06 22:14:02,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:02" (1/1) ... [2023-11-06 22:14:03,067 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:14:05,207 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2023-11-06 22:14:05,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:05,325 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:14:05,447 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [6149-6150] [2023-11-06 22:14:05,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [6158-6159] [2023-11-06 22:14:05,456 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [6355] [2023-11-06 22:14:05,457 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [6363] [2023-11-06 22:14:05,457 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; outsb": "+S" (addr), "+c" (count): "d" (port)); [6370] [2023-11-06 22:14:05,457 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; insb": "+D" (addr), "+c" (count): "d" (port)); [6377] [2023-11-06 22:14:05,674 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2023-11-06 22:14:05,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:05,746 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:14:05,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05 WrapperNode [2023-11-06 22:14:05,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:05,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:05,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:14:05,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:14:05,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:05,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,031 INFO L138 Inliner]: procedures = 228, calls = 2114, calls flagged for inlining = 106, calls inlined = 86, statements flattened = 3361 [2023-11-06 22:14:06,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:06,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:14:06,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:14:06,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:14:06,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,075 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,382 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:14:06,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:14:06,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:14:06,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:14:06,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (1/1) ... [2023-11-06 22:14:06,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:06,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:06,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:14:06,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:14:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure insb [2023-11-06 22:14:06,484 INFO L138 BoogieDeclarations]: Found implementation of procedure insb [2023-11-06 22:14:06,484 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692 [2023-11-06 22:14:06,484 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692 [2023-11-06 22:14:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_clear_bchannel [2023-11-06 22:14:06,485 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_clear_bchannel [2023-11-06 22:14:06,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-06 22:14:06,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-06 22:14:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-06 22:14:06,488 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-06 22:14:06,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-06 22:14:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-06 22:14:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 22:14:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 22:14:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_unregister_device [2023-11-06 22:14:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_unregister_device [2023-11-06 22:14:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692 [2023-11-06 22:14:06,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692 [2023-11-06 22:14:06,489 INFO L130 BoogieDeclarations]: Found specification of procedure W6692B_interrupt [2023-11-06 22:14:06,490 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692B_interrupt [2023-11-06 22:14:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-06 22:14:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-06 22:14:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure outsb [2023-11-06 22:14:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure outsb [2023-11-06 22:14:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 22:14:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 22:14:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:14:06,492 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:14:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Bfifo [2023-11-06 22:14:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Bfifo [2023-11-06 22:14:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-06 22:14:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-06 22:14:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Bfifo [2023-11-06 22:14:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Bfifo [2023-11-06 22:14:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure ReadW6692B [2023-11-06 22:14:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadW6692B [2023-11-06 22:14:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-06 22:14:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-06 22:14:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_empty_Dfifo [2023-11-06 22:14:06,495 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_empty_Dfifo [2023-11-06 22:14:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:14:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:14:06,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-06 22:14:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-06 22:14:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-06 22:14:06,497 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-06 22:14:06,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:14:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:14:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 22:14:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 22:14:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2023-11-06 22:14:06,498 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2023-11-06 22:14:06,498 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_led_handler [2023-11-06 22:14:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_led_handler [2023-11-06 22:14:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure send_next [2023-11-06 22:14:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure send_next [2023-11-06 22:14:06,499 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-06 22:14:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-06 22:14:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-06 22:14:06,500 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-06 22:14:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure WriteW6692B [2023-11-06 22:14:06,500 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteW6692B [2023-11-06 22:14:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freebchannel [2023-11-06 22:14:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freebchannel [2023-11-06 22:14:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure mISDN_freedchannel [2023-11-06 22:14:06,501 INFO L138 BoogieDeclarations]: Found implementation of procedure mISDN_freedchannel [2023-11-06 22:14:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:14:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure ph_command [2023-11-06 22:14:06,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_command [2023-11-06 22:14:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-06 22:14:06,502 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-06 22:14:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2023-11-06 22:14:06,502 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2023-11-06 22:14:06,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-06 22:14:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-06 22:14:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure _set_debug [2023-11-06 22:14:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure _set_debug [2023-11-06 22:14:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2023-11-06 22:14:06,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2023-11-06 22:14:06,503 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-06 22:14:06,504 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-06 22:14:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2023-11-06 22:14:06,504 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2023-11-06 22:14:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure disable_hwirq [2023-11-06 22:14:06,504 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_hwirq [2023-11-06 22:14:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:14:06,504 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_probe [2023-11-06 22:14:06,504 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_probe [2023-11-06 22:14:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-11-06 22:14:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-11-06 22:14:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2023-11-06 22:14:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2023-11-06 22:14:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-06 22:14:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-06 22:14:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 22:14:06,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 22:14:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-06 22:14:06,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-06 22:14:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:14:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2023-11-06 22:14:06,506 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2023-11-06 22:14:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_3 [2023-11-06 22:14:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_3 [2023-11-06 22:14:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-06 22:14:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-06 22:14:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:14:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure recv_Bchannel [2023-11-06 22:14:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure recv_Bchannel [2023-11-06 22:14:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2023-11-06 22:14:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2023-11-06 22:14:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:14:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-06 22:14:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-06 22:14:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2023-11-06 22:14:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2023-11-06 22:14:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2023-11-06 22:14:06,509 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2023-11-06 22:14:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure W6692_fill_Dfifo [2023-11-06 22:14:06,509 INFO L138 BoogieDeclarations]: Found implementation of procedure W6692_fill_Dfifo [2023-11-06 22:14:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure w6692_mode [2023-11-06 22:14:06,509 INFO L138 BoogieDeclarations]: Found implementation of procedure w6692_mode [2023-11-06 22:14:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_dframe [2023-11-06 22:14:06,510 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_dframe [2023-11-06 22:14:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure mI_alloc_skb [2023-11-06 22:14:06,510 INFO L138 BoogieDeclarations]: Found implementation of procedure mI_alloc_skb [2023-11-06 22:14:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2023-11-06 22:14:06,510 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2023-11-06 22:14:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure l1_event [2023-11-06 22:14:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_event [2023-11-06 22:14:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-06 22:14:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-06 22:14:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2023-11-06 22:14:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2023-11-06 22:14:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:14:06,511 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2023-11-06 22:14:06,511 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2023-11-06 22:14:06,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:14:06,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:14:07,087 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:14:07,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:14:08,637 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-06 22:14:11,404 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:14:11,422 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:14:11,423 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 22:14:11,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:11 BoogieIcfgContainer [2023-11-06 22:14:11,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:14:11,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:14:11,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:14:11,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:14:11,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:02" (1/3) ... [2023-11-06 22:14:11,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb3cf27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:11, skipping insertion in model container [2023-11-06 22:14:11,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:05" (2/3) ... [2023-11-06 22:14:11,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb3cf27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:11, skipping insertion in model container [2023-11-06 22:14:11,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:11" (3/3) ... [2023-11-06 22:14:11,438 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2023-11-06 22:14:11,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:14:11,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:14:11,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:14:11,574 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6c40b339, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:14:11,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:14:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 1240 states, 855 states have (on average 1.407017543859649) internal successors, (1203), 910 states have internal predecessors, (1203), 321 states have call successors, (321), 63 states have call predecessors, (321), 62 states have return successors, (315), 309 states have call predecessors, (315), 315 states have call successors, (315) [2023-11-06 22:14:11,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 22:14:11,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:11,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:11,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:11,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:11,617 INFO L85 PathProgramCache]: Analyzing trace with hash 725811581, now seen corresponding path program 1 times [2023-11-06 22:14:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:11,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599266542] [2023-11-06 22:14:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:11,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:14:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:14:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:14:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-06 22:14:12,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:12,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599266542] [2023-11-06 22:14:12,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599266542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:12,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:12,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:12,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849061797] [2023-11-06 22:14:12,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:12,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:12,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:12,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:12,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:12,797 INFO L87 Difference]: Start difference. First operand has 1240 states, 855 states have (on average 1.407017543859649) internal successors, (1203), 910 states have internal predecessors, (1203), 321 states have call successors, (321), 63 states have call predecessors, (321), 62 states have return successors, (315), 309 states have call predecessors, (315), 315 states have call successors, (315) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:14:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:16,891 INFO L93 Difference]: Finished difference Result 2504 states and 3749 transitions. [2023-11-06 22:14:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:16,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2023-11-06 22:14:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:16,922 INFO L225 Difference]: With dead ends: 2504 [2023-11-06 22:14:16,922 INFO L226 Difference]: Without dead ends: 1252 [2023-11-06 22:14:16,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:16,949 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 406 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:16,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 2541 Invalid, 1275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [650 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-06 22:14:16,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2023-11-06 22:14:17,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1223. [2023-11-06 22:14:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 846 states have (on average 1.392434988179669) internal successors, (1178), 893 states have internal predecessors, (1178), 315 states have call successors, (315), 62 states have call predecessors, (315), 61 states have return successors, (314), 308 states have call predecessors, (314), 314 states have call successors, (314) [2023-11-06 22:14:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1807 transitions. [2023-11-06 22:14:17,269 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1807 transitions. Word has length 64 [2023-11-06 22:14:17,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:17,270 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1807 transitions. [2023-11-06 22:14:17,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:14:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1807 transitions. [2023-11-06 22:14:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 22:14:17,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:17,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:17,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:14:17,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:17,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:17,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2043021693, now seen corresponding path program 1 times [2023-11-06 22:14:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:17,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778105868] [2023-11-06 22:14:17,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:17,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:14:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:14:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:14:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-06 22:14:17,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778105868] [2023-11-06 22:14:17,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778105868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:17,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:17,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:14:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367076455] [2023-11-06 22:14:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:17,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:14:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:17,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:14:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:17,869 INFO L87 Difference]: Start difference. First operand 1223 states and 1807 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-06 22:14:23,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:23,229 INFO L93 Difference]: Finished difference Result 3286 states and 4870 transitions. [2023-11-06 22:14:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:14:23,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2023-11-06 22:14:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:23,253 INFO L225 Difference]: With dead ends: 3286 [2023-11-06 22:14:23,253 INFO L226 Difference]: Without dead ends: 2072 [2023-11-06 22:14:23,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:23,263 INFO L413 NwaCegarLoop]: 1619 mSDtfsCounter, 1688 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 1072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1072 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:23,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 3854 Invalid, 2190 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1072 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 22:14:23,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2023-11-06 22:14:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 2016. [2023-11-06 22:14:23,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1405 states have (on average 1.4128113879003559) internal successors, (1985), 1498 states have internal predecessors, (1985), 506 states have call successors, (506), 105 states have call predecessors, (506), 104 states have return successors, (505), 492 states have call predecessors, (505), 505 states have call successors, (505) [2023-11-06 22:14:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2996 transitions. [2023-11-06 22:14:23,441 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2996 transitions. Word has length 64 [2023-11-06 22:14:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:23,442 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2996 transitions. [2023-11-06 22:14:23,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-06 22:14:23,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2996 transitions. [2023-11-06 22:14:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-06 22:14:23,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:23,451 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-06 22:14:23,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:14:23,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:23,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:23,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1128803470, now seen corresponding path program 1 times [2023-11-06 22:14:23,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:23,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69241783] [2023-11-06 22:14:23,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:23,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:14:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:14:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:14:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:14:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:14:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-06 22:14:24,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:24,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69241783] [2023-11-06 22:14:24,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69241783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:24,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:24,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:14:24,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628451670] [2023-11-06 22:14:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:24,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:14:24,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:14:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:24,295 INFO L87 Difference]: Start difference. First operand 2016 states and 2996 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:14:30,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:30,059 INFO L93 Difference]: Finished difference Result 4065 states and 6045 transitions. [2023-11-06 22:14:30,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:30,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 99 [2023-11-06 22:14:30,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:30,080 INFO L225 Difference]: With dead ends: 4065 [2023-11-06 22:14:30,080 INFO L226 Difference]: Without dead ends: 2067 [2023-11-06 22:14:30,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:30,100 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 219 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:30,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 4703 Invalid, 1825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [307 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-06 22:14:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2023-11-06 22:14:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 2016. [2023-11-06 22:14:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1405 states have (on average 1.412099644128114) internal successors, (1984), 1498 states have internal predecessors, (1984), 506 states have call successors, (506), 105 states have call predecessors, (506), 104 states have return successors, (505), 492 states have call predecessors, (505), 505 states have call successors, (505) [2023-11-06 22:14:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2995 transitions. [2023-11-06 22:14:30,261 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2995 transitions. Word has length 99 [2023-11-06 22:14:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:30,262 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2995 transitions. [2023-11-06 22:14:30,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-06 22:14:30,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2995 transitions. [2023-11-06 22:14:30,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-06 22:14:30,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:30,267 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:30,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:14:30,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:30,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash -539142559, now seen corresponding path program 1 times [2023-11-06 22:14:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:30,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110006024] [2023-11-06 22:14:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:14:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:14:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:14:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:14:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:14:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 22:14:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-06 22:14:31,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:31,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110006024] [2023-11-06 22:14:31,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110006024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:31,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:31,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:14:31,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61855299] [2023-11-06 22:14:31,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:31,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:14:31,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:31,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:14:31,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:31,018 INFO L87 Difference]: Start difference. First operand 2016 states and 2995 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-06 22:14:36,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:36,849 INFO L93 Difference]: Finished difference Result 2072 states and 3075 transitions. [2023-11-06 22:14:36,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 116 [2023-11-06 22:14:36,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:36,868 INFO L225 Difference]: With dead ends: 2072 [2023-11-06 22:14:36,869 INFO L226 Difference]: Without dead ends: 2069 [2023-11-06 22:14:36,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:14:36,872 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 220 mSDsluCounter, 3092 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:36,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 4704 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-06 22:14:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2023-11-06 22:14:36,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 2018. [2023-11-06 22:14:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1407 states have (on average 1.4115138592750534) internal successors, (1986), 1500 states have internal predecessors, (1986), 506 states have call successors, (506), 105 states have call predecessors, (506), 104 states have return successors, (505), 492 states have call predecessors, (505), 505 states have call successors, (505) [2023-11-06 22:14:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2997 transitions. [2023-11-06 22:14:36,994 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2997 transitions. Word has length 116 [2023-11-06 22:14:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:36,996 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 2997 transitions. [2023-11-06 22:14:36,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-06 22:14:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2997 transitions. [2023-11-06 22:14:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 22:14:37,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:37,001 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:37,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:14:37,001 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:37,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:37,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1102429030, now seen corresponding path program 1 times [2023-11-06 22:14:37,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:37,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090318726] [2023-11-06 22:14:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:37,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:14:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:14:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:37,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:14:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:14:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:14:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 22:14:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-06 22:14:38,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:38,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090318726] [2023-11-06 22:14:38,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090318726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:38,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:38,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:14:38,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066143106] [2023-11-06 22:14:38,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:38,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:14:38,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:38,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:14:38,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:14:38,113 INFO L87 Difference]: Start difference. First operand 2018 states and 2997 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:14:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:42,302 INFO L93 Difference]: Finished difference Result 4111 states and 6085 transitions. [2023-11-06 22:14:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:14:42,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 118 [2023-11-06 22:14:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:42,325 INFO L225 Difference]: With dead ends: 4111 [2023-11-06 22:14:42,325 INFO L226 Difference]: Without dead ends: 2112 [2023-11-06 22:14:42,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:14:42,341 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 849 mSDsluCounter, 3218 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 4828 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:42,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 4828 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-06 22:14:42,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2023-11-06 22:14:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2059. [2023-11-06 22:14:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 1435 states have (on average 1.4041811846689896) internal successors, (2015), 1528 states have internal predecessors, (2015), 509 states have call successors, (509), 115 states have call predecessors, (509), 114 states have return successors, (508), 495 states have call predecessors, (508), 508 states have call successors, (508) [2023-11-06 22:14:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 3032 transitions. [2023-11-06 22:14:42,476 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 3032 transitions. Word has length 118 [2023-11-06 22:14:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:42,477 INFO L495 AbstractCegarLoop]: Abstraction has 2059 states and 3032 transitions. [2023-11-06 22:14:42,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 22:14:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 3032 transitions. [2023-11-06 22:14:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-06 22:14:42,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:42,482 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:42,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:14:42,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:42,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash 471281748, now seen corresponding path program 1 times [2023-11-06 22:14:42,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:42,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989237264] [2023-11-06 22:14:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:14:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:14:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:14:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 22:14:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-06 22:14:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:14:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-06 22:14:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:14:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989237264] [2023-11-06 22:14:43,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989237264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:43,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:43,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:14:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927014167] [2023-11-06 22:14:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:43,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:14:43,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:43,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:14:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:14:43,235 INFO L87 Difference]: Start difference. First operand 2059 states and 3032 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:14:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:54,718 INFO L93 Difference]: Finished difference Result 6295 states and 9290 transitions. [2023-11-06 22:14:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:14:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2023-11-06 22:14:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:54,754 INFO L225 Difference]: With dead ends: 6295 [2023-11-06 22:14:54,755 INFO L226 Difference]: Without dead ends: 4259 [2023-11-06 22:14:54,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:14:54,770 INFO L413 NwaCegarLoop]: 1072 mSDtfsCounter, 3247 mSDsluCounter, 4323 mSDsCounter, 0 mSdLazyCounter, 6016 mSolverCounterSat, 1676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 5395 SdHoareTripleChecker+Invalid, 7692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1676 IncrementalHoareTripleChecker+Valid, 6016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:54,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3553 Valid, 5395 Invalid, 7692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1676 Valid, 6016 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-11-06 22:14:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2023-11-06 22:14:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 4138. [2023-11-06 22:14:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4138 states, 2878 states have (on average 1.4023627519110493) internal successors, (4036), 3066 states have internal predecessors, (4036), 1030 states have call successors, (1030), 228 states have call predecessors, (1030), 229 states have return successors, (1036), 1003 states have call predecessors, (1036), 1029 states have call successors, (1036) [2023-11-06 22:14:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4138 states to 4138 states and 6102 transitions. [2023-11-06 22:14:55,087 INFO L78 Accepts]: Start accepts. Automaton has 4138 states and 6102 transitions. Word has length 118 [2023-11-06 22:14:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:55,087 INFO L495 AbstractCegarLoop]: Abstraction has 4138 states and 6102 transitions. [2023-11-06 22:14:55,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:14:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 4138 states and 6102 transitions. [2023-11-06 22:14:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 22:14:55,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:55,093 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:55,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:14:55,093 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:55,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash -220019248, now seen corresponding path program 1 times [2023-11-06 22:14:55,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:55,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362905511] [2023-11-06 22:14:55,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:55,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:14:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:14:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:14:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:14:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 22:14:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:14:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:14:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 22:14:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:14:55,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:55,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362905511] [2023-11-06 22:14:55,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362905511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:55,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:55,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:14:55,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69731482] [2023-11-06 22:14:55,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:55,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:14:55,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:14:55,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:14:55,796 INFO L87 Difference]: Start difference. First operand 4138 states and 6102 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:15:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:05,472 INFO L93 Difference]: Finished difference Result 12623 states and 18627 transitions. [2023-11-06 22:15:05,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:15:05,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 119 [2023-11-06 22:15:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:05,549 INFO L225 Difference]: With dead ends: 12623 [2023-11-06 22:15:05,549 INFO L226 Difference]: Without dead ends: 8508 [2023-11-06 22:15:05,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:15:05,578 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 3616 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 2429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 4289 SdHoareTripleChecker+Invalid, 7401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2429 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:05,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3921 Valid, 4289 Invalid, 7401 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2429 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-11-06 22:15:05,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2023-11-06 22:15:06,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8269. [2023-11-06 22:15:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8269 states, 5755 states have (on average 1.401737619461338) internal successors, (8067), 6131 states have internal predecessors, (8067), 2054 states have call successors, (2054), 456 states have call predecessors, (2054), 459 states have return successors, (2079), 2001 states have call predecessors, (2079), 2053 states have call successors, (2079) [2023-11-06 22:15:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8269 states to 8269 states and 12200 transitions. [2023-11-06 22:15:06,355 INFO L78 Accepts]: Start accepts. Automaton has 8269 states and 12200 transitions. Word has length 119 [2023-11-06 22:15:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:06,356 INFO L495 AbstractCegarLoop]: Abstraction has 8269 states and 12200 transitions. [2023-11-06 22:15:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:15:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8269 states and 12200 transitions. [2023-11-06 22:15:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-06 22:15:06,361 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:06,361 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:06,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:15:06,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:06,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1336758001, now seen corresponding path program 1 times [2023-11-06 22:15:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:06,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489614945] [2023-11-06 22:15:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:06,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:15:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:15:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:15:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 22:15:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 22:15:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 22:15:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 22:15:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:15:07,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:07,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489614945] [2023-11-06 22:15:07,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489614945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:07,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:07,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:15:07,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354887055] [2023-11-06 22:15:07,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:07,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:15:07,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:15:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:15:07,049 INFO L87 Difference]: Start difference. First operand 8269 states and 12200 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:15:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:16,607 INFO L93 Difference]: Finished difference Result 25273 states and 37284 transitions. [2023-11-06 22:15:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:15:16,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2023-11-06 22:15:16,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:16,727 INFO L225 Difference]: With dead ends: 25273 [2023-11-06 22:15:16,727 INFO L226 Difference]: Without dead ends: 17027 [2023-11-06 22:15:16,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:15:16,777 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 3611 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 4989 mSolverCounterSat, 2425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 7414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2425 IncrementalHoareTripleChecker+Valid, 4989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:16,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3917 Valid, 4290 Invalid, 7414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2425 Valid, 4989 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-11-06 22:15:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17027 states. [2023-11-06 22:15:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17027 to 16552. [2023-11-06 22:15:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16552 states, 11526 states have (on average 1.40074613916363) internal successors, (16145), 12278 states have internal predecessors, (16145), 4102 states have call successors, (4102), 916 states have call predecessors, (4102), 923 states have return successors, (4182), 3997 states have call predecessors, (4182), 4101 states have call successors, (4182) [2023-11-06 22:15:18,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16552 states to 16552 states and 24429 transitions. [2023-11-06 22:15:18,063 INFO L78 Accepts]: Start accepts. Automaton has 16552 states and 24429 transitions. Word has length 120 [2023-11-06 22:15:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:18,064 INFO L495 AbstractCegarLoop]: Abstraction has 16552 states and 24429 transitions. [2023-11-06 22:15:18,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:15:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 16552 states and 24429 transitions. [2023-11-06 22:15:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-06 22:15:18,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:18,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:18,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:15:18,070 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:18,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:18,070 INFO L85 PathProgramCache]: Analyzing trace with hash -981655917, now seen corresponding path program 1 times [2023-11-06 22:15:18,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:18,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170971277] [2023-11-06 22:15:18,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:18,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:15:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:15:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:15:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 22:15:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 22:15:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 22:15:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-06 22:15:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:15:18,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:18,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170971277] [2023-11-06 22:15:18,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170971277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:18,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:18,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:15:18,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587145444] [2023-11-06 22:15:18,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:18,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:15:18,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:18,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:15:18,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:15:18,835 INFO L87 Difference]: Start difference. First operand 16552 states and 24429 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:15:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:31,513 INFO L93 Difference]: Finished difference Result 49182 states and 72487 transitions. [2023-11-06 22:15:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:15:31,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 117 [2023-11-06 22:15:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:31,709 INFO L225 Difference]: With dead ends: 49182 [2023-11-06 22:15:31,709 INFO L226 Difference]: Without dead ends: 32653 [2023-11-06 22:15:31,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:15:31,773 INFO L413 NwaCegarLoop]: 1445 mSDtfsCounter, 2880 mSDsluCounter, 4818 mSDsCounter, 0 mSdLazyCounter, 7986 mSolverCounterSat, 1654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3185 SdHoareTripleChecker+Valid, 6263 SdHoareTripleChecker+Invalid, 9640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1654 IncrementalHoareTripleChecker+Valid, 7986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:31,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3185 Valid, 6263 Invalid, 9640 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1654 Valid, 7986 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-11-06 22:15:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32653 states. [2023-11-06 22:15:33,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32653 to 31548. [2023-11-06 22:15:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31548 states, 21958 states have (on average 1.3994899353310866) internal successors, (30730), 23413 states have internal predecessors, (30730), 7818 states have call successors, (7818), 1756 states have call predecessors, (7818), 1771 states have return successors, (8046), 7581 states have call predecessors, (8046), 7817 states have call successors, (8046) [2023-11-06 22:15:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31548 states to 31548 states and 46594 transitions. [2023-11-06 22:15:34,214 INFO L78 Accepts]: Start accepts. Automaton has 31548 states and 46594 transitions. Word has length 117 [2023-11-06 22:15:34,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:34,215 INFO L495 AbstractCegarLoop]: Abstraction has 31548 states and 46594 transitions. [2023-11-06 22:15:34,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-06 22:15:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 31548 states and 46594 transitions. [2023-11-06 22:15:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-06 22:15:34,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:34,220 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:34,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:15:34,221 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:34,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash 960274185, now seen corresponding path program 1 times [2023-11-06 22:15:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:34,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239887861] [2023-11-06 22:15:34,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:34,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:15:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:15:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:34,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:15:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-06 22:15:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:15:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 22:15:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 22:15:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-06 22:15:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-06 22:15:35,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:35,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239887861] [2023-11-06 22:15:35,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239887861] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:35,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151180126] [2023-11-06 22:15:35,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:35,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:35,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:35,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:35,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:15:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:36,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:15:36,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:15:36,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:36,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151180126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:36,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:15:36,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-06 22:15:36,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587318924] [2023-11-06 22:15:36,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:36,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:15:36,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:36,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:15:36,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:15:36,803 INFO L87 Difference]: Start difference. First operand 31548 states and 46594 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:15:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:39,315 INFO L93 Difference]: Finished difference Result 78510 states and 115918 transitions. [2023-11-06 22:15:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:15:39,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 130 [2023-11-06 22:15:39,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:39,545 INFO L225 Difference]: With dead ends: 78510 [2023-11-06 22:15:39,546 INFO L226 Difference]: Without dead ends: 46985 [2023-11-06 22:15:39,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:15:39,662 INFO L413 NwaCegarLoop]: 2858 mSDtfsCounter, 1828 mSDsluCounter, 13218 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 16076 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:39,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 16076 Invalid, 81 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:15:39,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46985 states. [2023-11-06 22:15:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46985 to 41659. [2023-11-06 22:15:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41659 states, 29041 states have (on average 1.3934437519369167) internal successors, (40467), 30872 states have internal predecessors, (40467), 10255 states have call successors, (10255), 2323 states have call predecessors, (10255), 2362 states have return successors, (10690), 9956 states have call predecessors, (10690), 10254 states have call successors, (10690) [2023-11-06 22:15:43,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41659 states to 41659 states and 61412 transitions. [2023-11-06 22:15:43,165 INFO L78 Accepts]: Start accepts. Automaton has 41659 states and 61412 transitions. Word has length 130 [2023-11-06 22:15:43,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:43,166 INFO L495 AbstractCegarLoop]: Abstraction has 41659 states and 61412 transitions. [2023-11-06 22:15:43,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:15:43,166 INFO L276 IsEmpty]: Start isEmpty. Operand 41659 states and 61412 transitions. [2023-11-06 22:15:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-06 22:15:43,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:43,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:43,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:43,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:15:43,384 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:43,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash 421540995, now seen corresponding path program 1 times [2023-11-06 22:15:43,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:43,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542998822] [2023-11-06 22:15:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:15:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:15:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:15:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 22:15:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-06 22:15:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 22:15:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 22:15:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-06 22:15:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:15:44,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:44,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542998822] [2023-11-06 22:15:44,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542998822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:44,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621106264] [2023-11-06 22:15:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:44,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:44,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:44,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:44,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:15:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:45,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:15:45,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:15:46,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:46,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621106264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:46,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:15:46,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-06 22:15:46,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873075738] [2023-11-06 22:15:46,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:46,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:15:46,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:46,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:15:46,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:15:46,027 INFO L87 Difference]: Start difference. First operand 41659 states and 61412 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:15:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:49,112 INFO L93 Difference]: Finished difference Result 103869 states and 153237 transitions. [2023-11-06 22:15:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:15:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 131 [2023-11-06 22:15:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:49,469 INFO L225 Difference]: With dead ends: 103869 [2023-11-06 22:15:49,469 INFO L226 Difference]: Without dead ends: 62233 [2023-11-06 22:15:49,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:15:49,628 INFO L413 NwaCegarLoop]: 3022 mSDtfsCounter, 1827 mSDsluCounter, 13861 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 16883 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:49,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 16883 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:15:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62233 states. [2023-11-06 22:15:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62233 to 51810. [2023-11-06 22:15:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51810 states, 36148 states have (on average 1.3895097930729223) internal successors, (50228), 38379 states have internal predecessors, (50228), 12692 states have call successors, (12692), 2890 states have call predecessors, (12692), 2969 states have return successors, (13342), 12323 states have call predecessors, (13342), 12691 states have call successors, (13342) [2023-11-06 22:15:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51810 states to 51810 states and 76262 transitions. [2023-11-06 22:15:53,295 INFO L78 Accepts]: Start accepts. Automaton has 51810 states and 76262 transitions. Word has length 131 [2023-11-06 22:15:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:53,296 INFO L495 AbstractCegarLoop]: Abstraction has 51810 states and 76262 transitions. [2023-11-06 22:15:53,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:15:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 51810 states and 76262 transitions. [2023-11-06 22:15:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-06 22:15:53,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:53,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:53,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:15:53,524 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:53,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1952354782, now seen corresponding path program 1 times [2023-11-06 22:15:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:53,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291655830] [2023-11-06 22:15:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:15:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:15:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:15:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:15:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 22:15:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:15:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:15:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 22:15:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 22:15:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:15:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291655830] [2023-11-06 22:15:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291655830] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052717153] [2023-11-06 22:15:54,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:54,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:54,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:54,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:54,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:15:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:55,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 3093 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:15:55,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:15:56,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:15:56,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052717153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:56,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:15:56,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-06 22:15:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551682209] [2023-11-06 22:15:56,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:56,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:15:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:15:56,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:15:56,012 INFO L87 Difference]: Start difference. First operand 51810 states and 76262 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:15:59,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:59,706 INFO L93 Difference]: Finished difference Result 124152 states and 182907 transitions. [2023-11-06 22:15:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:15:59,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 132 [2023-11-06 22:15:59,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:00,106 INFO L225 Difference]: With dead ends: 124152 [2023-11-06 22:16:00,106 INFO L226 Difference]: Without dead ends: 72365 [2023-11-06 22:16:00,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:16:00,290 INFO L413 NwaCegarLoop]: 3022 mSDtfsCounter, 1827 mSDsluCounter, 13862 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 16884 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:00,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 16884 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:16:00,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72365 states. [2023-11-06 22:16:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72365 to 51842. [2023-11-06 22:16:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51842 states, 36172 states have (on average 1.3892513546389473) internal successors, (50252), 38403 states have internal predecessors, (50252), 12692 states have call successors, (12692), 2890 states have call predecessors, (12692), 2977 states have return successors, (13354), 12331 states have call predecessors, (13354), 12691 states have call successors, (13354) [2023-11-06 22:16:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51842 states to 51842 states and 76298 transitions. [2023-11-06 22:16:04,022 INFO L78 Accepts]: Start accepts. Automaton has 51842 states and 76298 transitions. Word has length 132 [2023-11-06 22:16:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:04,023 INFO L495 AbstractCegarLoop]: Abstraction has 51842 states and 76298 transitions. [2023-11-06 22:16:04,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:16:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 51842 states and 76298 transitions. [2023-11-06 22:16:04,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 22:16:04,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:04,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:04,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:04,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:16:04,245 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:04,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1086748612, now seen corresponding path program 1 times [2023-11-06 22:16:04,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:04,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085501588] [2023-11-06 22:16:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:04,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:04,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:16:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:16:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:16:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:16:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:16:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:16:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:16:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-06 22:16:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 22:16:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 22:16:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-06 22:16:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:16:05,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:05,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085501588] [2023-11-06 22:16:05,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085501588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:05,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071897865] [2023-11-06 22:16:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:05,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:05,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:05,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:05,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:16:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:06,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:16:06,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:16:06,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:16:06,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071897865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:06,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:16:06,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2023-11-06 22:16:06,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756789058] [2023-11-06 22:16:06,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:06,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:16:06,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:16:06,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:16:06,320 INFO L87 Difference]: Start difference. First operand 51842 states and 76298 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:16:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:10,206 INFO L93 Difference]: Finished difference Result 124200 states and 182959 transitions. [2023-11-06 22:16:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:16:10,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 133 [2023-11-06 22:16:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:10,504 INFO L225 Difference]: With dead ends: 124200 [2023-11-06 22:16:10,504 INFO L226 Difference]: Without dead ends: 72381 [2023-11-06 22:16:10,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:16:10,649 INFO L413 NwaCegarLoop]: 3022 mSDtfsCounter, 1827 mSDsluCounter, 13862 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 16884 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:10,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 16884 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:16:10,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72381 states. [2023-11-06 22:16:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72381 to 51862. [2023-11-06 22:16:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51862 states, 36188 states have (on average 1.3890792527909805) internal successors, (50268), 38415 states have internal predecessors, (50268), 12692 states have call successors, (12692), 2890 states have call predecessors, (12692), 2981 states have return successors, (13358), 12339 states have call predecessors, (13358), 12691 states have call successors, (13358) [2023-11-06 22:16:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51862 states to 51862 states and 76318 transitions. [2023-11-06 22:16:14,286 INFO L78 Accepts]: Start accepts. Automaton has 51862 states and 76318 transitions. Word has length 133 [2023-11-06 22:16:14,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:14,287 INFO L495 AbstractCegarLoop]: Abstraction has 51862 states and 76318 transitions. [2023-11-06 22:16:14,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 22:16:14,288 INFO L276 IsEmpty]: Start isEmpty. Operand 51862 states and 76318 transitions. [2023-11-06 22:16:14,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-06 22:16:14,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:14,294 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:16:14,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:16:14,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:16:14,508 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:14,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1329817559, now seen corresponding path program 1 times [2023-11-06 22:16:14,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:14,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565679745] [2023-11-06 22:16:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:14,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:16:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:16:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 22:16:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:16:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 22:16:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 22:16:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 22:16:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-06 22:16:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 22:16:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 22:16:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-06 22:16:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-06 22:16:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-06 22:16:15,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:15,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565679745] [2023-11-06 22:16:15,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565679745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:16:15,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069163277] [2023-11-06 22:16:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:15,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:16:15,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:16:15,760 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:16:15,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d413bd2-0fc9-4968-9492-0077bbe5429b/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:16:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:16,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:16:16,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:16:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 22:16:16,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:16:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-06 22:16:17,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069163277] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:16:17,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:16:17,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 23 [2023-11-06 22:16:17,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279267591] [2023-11-06 22:16:17,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:16:17,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:16:17,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:16:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:16:17,433 INFO L87 Difference]: Start difference. First operand 51862 states and 76318 transitions. Second operand has 23 states, 23 states have (on average 6.130434782608695) internal successors, (141), 15 states have internal predecessors, (141), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-06 22:17:17,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:17:17,646 INFO L93 Difference]: Finished difference Result 157247 states and 231396 transitions. [2023-11-06 22:17:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-06 22:17:17,647 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.130434782608695) internal successors, (141), 15 states have internal predecessors, (141), 5 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 146 [2023-11-06 22:17:17,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:17:18,151 INFO L225 Difference]: With dead ends: 157247 [2023-11-06 22:17:18,151 INFO L226 Difference]: Without dead ends: 105044 [2023-11-06 22:17:18,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 323 SyntacticMatches, 8 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6794 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2752, Invalid=15338, Unknown=0, NotChecked=0, Total=18090 [2023-11-06 22:17:18,333 INFO L413 NwaCegarLoop]: 2097 mSDtfsCounter, 17613 mSDsluCounter, 18327 mSDsCounter, 0 mSdLazyCounter, 38203 mSolverCounterSat, 10627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18032 SdHoareTripleChecker+Valid, 20424 SdHoareTripleChecker+Invalid, 48830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 10627 IncrementalHoareTripleChecker+Valid, 38203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:17:18,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18032 Valid, 20424 Invalid, 48830 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [10627 Valid, 38203 Invalid, 0 Unknown, 0 Unchecked, 47.4s Time] [2023-11-06 22:17:18,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105044 states.