./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b615ef3e9ec848bbbdbcac9993fc5d609594ef1caaa279a862c4f038e6ec482e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:38:51,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:38:51,566 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 10:38:51,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:38:51,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:38:51,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:38:51,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:38:51,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:38:51,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:38:51,593 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:38:51,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:38:51,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:38:51,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:38:51,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:38:51,594 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:38:51,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:38:51,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:38:51,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:38:51,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:38:51,594 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:38:51,595 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:38:51,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:38:51,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:38:51,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:38:51,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:38:51,597 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b615ef3e9ec848bbbdbcac9993fc5d609594ef1caaa279a862c4f038e6ec482e [2024-12-02 10:38:51,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:38:51,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:38:51,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:38:51,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:38:51,837 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:38:51,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2024-12-02 10:38:54,483 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/data/3474273bf/e9e472ac2e1b495bb688ef5fedcb1380/FLAG73e15edee [2024-12-02 10:38:54,885 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:38:54,885 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2024-12-02 10:38:54,914 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/data/3474273bf/e9e472ac2e1b495bb688ef5fedcb1380/FLAG73e15edee [2024-12-02 10:38:54,929 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/data/3474273bf/e9e472ac2e1b495bb688ef5fedcb1380 [2024-12-02 10:38:54,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:38:54,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:38:54,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:38:54,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:38:54,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:38:54,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:38:54" (1/1) ... [2024-12-02 10:38:54,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f07f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:54, skipping insertion in model container [2024-12-02 10:38:54,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:38:54" (1/1) ... [2024-12-02 10:38:55,018 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:38:55,918 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i[208194,208207] [2024-12-02 10:38:55,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:38:55,979 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:38:56,068 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5300] [2024-12-02 10:38:56,069 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5307] [2024-12-02 10:38:56,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [5446] [2024-12-02 10:38:56,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [5454] [2024-12-02 10:38:56,084 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1,%b0": "=a" (_v): "d" (port)); [5637] [2024-12-02 10:38:56,178 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i[208194,208207] [2024-12-02 10:38:56,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:38:56,240 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:38:56,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56 WrapperNode [2024-12-02 10:38:56,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:38:56,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:38:56,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:38:56,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:38:56,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,384 INFO L138 Inliner]: procedures = 152, calls = 711, calls flagged for inlining = 70, calls inlined = 67, statements flattened = 1968 [2024-12-02 10:38:56,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:38:56,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:38:56,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:38:56,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:38:56,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,407 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,535 INFO L175 MemorySlicer]: Split 327 memory accesses to 10 slices as follows [2, 209, 61, 3, 23, 4, 4, 11, 4, 6]. 64 percent of accesses are in the largest equivalence class. The 39 initializations are split as follows [2, 0, 0, 2, 23, 2, 2, 8, 0, 0]. The 192 writes are split as follows [0, 125, 61, 0, 0, 0, 0, 0, 2, 4]. [2024-12-02 10:38:56,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,601 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:38:56,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:38:56,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:38:56,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:38:56,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (1/1) ... [2024-12-02 10:38:56,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:38:56,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:38:56,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:38:56,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure atp_probe1 [2024-12-02 10:38:56,720 INFO L138 BoogieDeclarations]: Found implementation of procedure atp_probe1 [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2024-12-02 10:38:56,720 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 10:38:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2024-12-02 10:38:56,721 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-12-02 10:38:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-12-02 10:38:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-12-02 10:38:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-12-02 10:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2024-12-02 10:38:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2024-12-02 10:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2024-12-02 10:38:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2024-12-02 10:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure write_byte_mode0 [2024-12-02 10:38:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure write_byte_mode0 [2024-12-02 10:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure write_byte_mode1 [2024-12-02 10:38:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure write_byte_mode1 [2024-12-02 10:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2024-12-02 10:38:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2024-12-02 10:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-12-02 10:38:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-12-02 10:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-12-02 10:38:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-12-02 10:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2024-12-02 10:38:56,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2024-12-02 10:38:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure net_rx [2024-12-02 10:38:56,724 INFO L138 BoogieDeclarations]: Found implementation of procedure net_rx [2024-12-02 10:38:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-12-02 10:38:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-12-02 10:38:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg_high [2024-12-02 10:38:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg_high [2024-12-02 10:38:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-12-02 10:38:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-12-02 10:38:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:38:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:38:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-12-02 10:38:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-12-02 10:38:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure read_nibble [2024-12-02 10:38:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nibble [2024-12-02 10:38:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 10:38:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure hardware_init [2024-12-02 10:38:56,725 INFO L138 BoogieDeclarations]: Found implementation of procedure hardware_init [2024-12-02 10:38:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2024-12-02 10:38:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2024-12-02 10:38:56,726 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2024-12-02 10:38:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2024-12-02 10:38:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-12-02 10:38:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg_byte [2024-12-02 10:38:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg_byte [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2024-12-02 10:38:56,727 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2024-12-02 10:38:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2024-12-02 10:38:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2024-12-02 10:38:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 10:38:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure inbyte [2024-12-02 10:38:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure inbyte [2024-12-02 10:38:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-12-02 10:38:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-12-02 10:38:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_send [2024-12-02 10:38:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_send [2024-12-02 10:38:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-12-02 10:38:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-12-02 10:38:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2024-12-02 10:38:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2024-12-02 10:38:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2024-12-02 10:38:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2024-12-02 10:38:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2024-12-02 10:38:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2024-12-02 10:38:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-12-02 10:38:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-12-02 10:38:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_op [2024-12-02 10:38:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_op [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-12-02 10:38:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 10:38:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:38:56,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:38:57,106 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:38:57,109 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:38:57,668 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-12-02 10:39:04,111 INFO L? ?]: Removed 775 outVars from TransFormulas that were not future-live. [2024-12-02 10:39:04,112 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:39:04,137 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:39:04,137 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 10:39:04,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:39:04 BoogieIcfgContainer [2024-12-02 10:39:04,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:39:04,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:39:04,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:39:04,145 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:39:04,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:38:54" (1/3) ... [2024-12-02 10:39:04,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336ebbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:39:04, skipping insertion in model container [2024-12-02 10:39:04,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:56" (2/3) ... [2024-12-02 10:39:04,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336ebbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:39:04, skipping insertion in model container [2024-12-02 10:39:04,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:39:04" (3/3) ... [2024-12-02 10:39:04,147 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2024-12-02 10:39:04,161 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:39:04,163 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i that has 41 procedures, 924 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:39:04,227 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:39:04,238 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2786b7b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:39:04,238 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:39:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 923 states, 639 states have (on average 1.3708920187793427) internal successors, (876), 654 states have internal predecessors, (876), 243 states have call successors, (243), 40 states have call predecessors, (243), 39 states have return successors, (238), 236 states have call predecessors, (238), 238 states have call successors, (238) [2024-12-02 10:39:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-12-02 10:39:04,283 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:04,284 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:04,284 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:04,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:04,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1528622827, now seen corresponding path program 1 times [2024-12-02 10:39:04,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:04,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018869329] [2024-12-02 10:39:04,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:04,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2471 trivial. 0 not checked. [2024-12-02 10:39:07,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:07,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018869329] [2024-12-02 10:39:07,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018869329] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:39:07,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931043245] [2024-12-02 10:39:07,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:07,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:07,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:07,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:39:07,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:39:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:10,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 10:39:10,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:39:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2467 trivial. 0 not checked. [2024-12-02 10:39:10,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:39:10,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931043245] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:10,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:39:10,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 10:39:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829424761] [2024-12-02 10:39:10,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:10,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:39:10,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:10,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:39:10,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:39:10,106 INFO L87 Difference]: Start difference. First operand has 923 states, 639 states have (on average 1.3708920187793427) internal successors, (876), 654 states have internal predecessors, (876), 243 states have call successors, (243), 40 states have call predecessors, (243), 39 states have return successors, (238), 236 states have call predecessors, (238), 238 states have call successors, (238) Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-12-02 10:39:10,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:39:10,215 INFO L93 Difference]: Finished difference Result 1841 states and 2789 transitions. [2024-12-02 10:39:10,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:39:10,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 364 [2024-12-02 10:39:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:39:10,234 INFO L225 Difference]: With dead ends: 1841 [2024-12-02 10:39:10,234 INFO L226 Difference]: Without dead ends: 901 [2024-12-02 10:39:10,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:39:10,246 INFO L435 NwaCegarLoop]: 1337 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:39:10,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:39:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2024-12-02 10:39:10,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2024-12-02 10:39:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 626 states have (on average 1.3370607028753994) internal successors, (837), 634 states have internal predecessors, (837), 236 states have call successors, (236), 39 states have call predecessors, (236), 38 states have return successors, (235), 233 states have call predecessors, (235), 235 states have call successors, (235) [2024-12-02 10:39:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1308 transitions. [2024-12-02 10:39:10,341 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1308 transitions. Word has length 364 [2024-12-02 10:39:10,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:39:10,342 INFO L471 AbstractCegarLoop]: Abstraction has 901 states and 1308 transitions. [2024-12-02 10:39:10,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2024-12-02 10:39:10,342 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1308 transitions. [2024-12-02 10:39:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-12-02 10:39:10,357 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:10,357 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:10,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:39:10,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:10,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:10,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:10,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1064948970, now seen corresponding path program 1 times [2024-12-02 10:39:10,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:10,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629986177] [2024-12-02 10:39:10,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:10,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:39:13,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:13,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629986177] [2024-12-02 10:39:13,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629986177] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:13,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:13,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:39:13,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872476070] [2024-12-02 10:39:13,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:13,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:39:13,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:13,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:39:13,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:39:13,347 INFO L87 Difference]: Start difference. First operand 901 states and 1308 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 10:39:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:39:13,804 INFO L93 Difference]: Finished difference Result 2688 states and 3902 transitions. [2024-12-02 10:39:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:39:13,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 324 [2024-12-02 10:39:13,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:39:13,823 INFO L225 Difference]: With dead ends: 2688 [2024-12-02 10:39:13,823 INFO L226 Difference]: Without dead ends: 1797 [2024-12-02 10:39:13,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:39:13,831 INFO L435 NwaCegarLoop]: 1680 mSDtfsCounter, 1290 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 6315 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:39:13,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 6315 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:39:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2024-12-02 10:39:13,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1792. [2024-12-02 10:39:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1245 states have (on average 1.3349397590361445) internal successors, (1662), 1261 states have internal predecessors, (1662), 469 states have call successors, (469), 78 states have call predecessors, (469), 77 states have return successors, (468), 464 states have call predecessors, (468), 468 states have call successors, (468) [2024-12-02 10:39:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2599 transitions. [2024-12-02 10:39:13,949 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2599 transitions. Word has length 324 [2024-12-02 10:39:13,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:39:13,949 INFO L471 AbstractCegarLoop]: Abstraction has 1792 states and 2599 transitions. [2024-12-02 10:39:13,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 10:39:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2599 transitions. [2024-12-02 10:39:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-12-02 10:39:13,965 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:13,966 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:13,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:39:13,966 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:13,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 600035532, now seen corresponding path program 1 times [2024-12-02 10:39:13,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:13,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563645719] [2024-12-02 10:39:13,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2476 trivial. 0 not checked. [2024-12-02 10:39:16,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:16,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563645719] [2024-12-02 10:39:16,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563645719] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:16,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:16,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:39:16,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190662567] [2024-12-02 10:39:16,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:16,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:39:16,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:16,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:39:16,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:39:16,854 INFO L87 Difference]: Start difference. First operand 1792 states and 2599 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-12-02 10:39:17,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:39:17,328 INFO L93 Difference]: Finished difference Result 5364 states and 7778 transitions. [2024-12-02 10:39:17,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:39:17,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 362 [2024-12-02 10:39:17,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:39:17,349 INFO L225 Difference]: With dead ends: 5364 [2024-12-02 10:39:17,349 INFO L226 Difference]: Without dead ends: 3582 [2024-12-02 10:39:17,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:39:17,358 INFO L435 NwaCegarLoop]: 1729 mSDtfsCounter, 1289 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 6463 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:39:17,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 6463 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:39:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2024-12-02 10:39:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3561. [2024-12-02 10:39:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 2471 states have (on average 1.3342776203966005) internal successors, (3297), 2510 states have internal predecessors, (3297), 934 states have call successors, (934), 156 states have call predecessors, (934), 155 states have return successors, (933), 918 states have call predecessors, (933), 933 states have call successors, (933) [2024-12-02 10:39:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5164 transitions. [2024-12-02 10:39:17,498 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5164 transitions. Word has length 362 [2024-12-02 10:39:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:39:17,498 INFO L471 AbstractCegarLoop]: Abstraction has 3561 states and 5164 transitions. [2024-12-02 10:39:17,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-12-02 10:39:17,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5164 transitions. [2024-12-02 10:39:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2024-12-02 10:39:17,510 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:17,510 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:17,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:39:17,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:17,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:17,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1273095033, now seen corresponding path program 1 times [2024-12-02 10:39:17,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:17,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421847066] [2024-12-02 10:39:17,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:17,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:39:20,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421847066] [2024-12-02 10:39:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421847066] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:20,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:39:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086182955] [2024-12-02 10:39:20,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:20,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:39:20,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:20,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:39:20,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:39:20,159 INFO L87 Difference]: Start difference. First operand 3561 states and 5164 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 10:39:20,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:39:20,722 INFO L93 Difference]: Finished difference Result 10691 states and 15498 transitions. [2024-12-02 10:39:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:39:20,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 326 [2024-12-02 10:39:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:39:20,782 INFO L225 Difference]: With dead ends: 10691 [2024-12-02 10:39:20,782 INFO L226 Difference]: Without dead ends: 7140 [2024-12-02 10:39:20,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:39:20,808 INFO L435 NwaCegarLoop]: 1305 mSDtfsCounter, 1292 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:39:20,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 5191 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:39:20,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2024-12-02 10:39:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 7117. [2024-12-02 10:39:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 4941 states have (on average 1.333130945152803) internal successors, (6587), 5017 states have internal predecessors, (6587), 1863 states have call successors, (1863), 313 states have call predecessors, (1863), 312 states have return successors, (1862), 1834 states have call predecessors, (1862), 1862 states have call successors, (1862) [2024-12-02 10:39:21,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 10312 transitions. [2024-12-02 10:39:21,222 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 10312 transitions. Word has length 326 [2024-12-02 10:39:21,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:39:21,222 INFO L471 AbstractCegarLoop]: Abstraction has 7117 states and 10312 transitions. [2024-12-02 10:39:21,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 10:39:21,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 10312 transitions. [2024-12-02 10:39:21,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-12-02 10:39:21,248 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:21,248 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:21,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:39:21,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:21,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash -189699494, now seen corresponding path program 1 times [2024-12-02 10:39:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446140115] [2024-12-02 10:39:21,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:21,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:39:23,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446140115] [2024-12-02 10:39:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446140115] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:23,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:23,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:39:23,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639645627] [2024-12-02 10:39:23,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:23,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:39:23,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:23,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:39:23,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:39:23,756 INFO L87 Difference]: Start difference. First operand 7117 states and 10312 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 10:39:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:39:24,459 INFO L93 Difference]: Finished difference Result 21143 states and 30592 transitions. [2024-12-02 10:39:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:39:24,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 325 [2024-12-02 10:39:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:39:24,537 INFO L225 Difference]: With dead ends: 21143 [2024-12-02 10:39:24,538 INFO L226 Difference]: Without dead ends: 14036 [2024-12-02 10:39:24,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:39:24,568 INFO L435 NwaCegarLoop]: 1306 mSDtfsCounter, 1291 mSDsluCounter, 3888 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 5194 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:39:24,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 5194 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:39:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14036 states. [2024-12-02 10:39:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14036 to 13994. [2024-12-02 10:39:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13994 states, 9722 states have (on average 1.3302818350133718) internal successors, (12933), 9865 states have internal predecessors, (12933), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-12-02 10:39:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13994 states to 13994 states and 20226 transitions. [2024-12-02 10:39:25,413 INFO L78 Accepts]: Start accepts. Automaton has 13994 states and 20226 transitions. Word has length 325 [2024-12-02 10:39:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:39:25,413 INFO L471 AbstractCegarLoop]: Abstraction has 13994 states and 20226 transitions. [2024-12-02 10:39:25,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2024-12-02 10:39:25,413 INFO L276 IsEmpty]: Start isEmpty. Operand 13994 states and 20226 transitions. [2024-12-02 10:39:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-12-02 10:39:25,437 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:25,437 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:25,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:39:25,437 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:25,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2043533653, now seen corresponding path program 1 times [2024-12-02 10:39:25,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:25,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935654599] [2024-12-02 10:39:25,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:25,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2024-12-02 10:39:28,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:28,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935654599] [2024-12-02 10:39:28,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935654599] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:39:28,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268784579] [2024-12-02 10:39:28,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:28,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:28,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:28,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:39:28,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:39:31,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:31,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:39:31,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:39:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2024-12-02 10:39:31,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:39:31,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268784579] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:31,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:39:31,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 10:39:31,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259747021] [2024-12-02 10:39:31,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:31,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:31,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:31,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:31,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:31,417 INFO L87 Difference]: Start difference. First operand 13994 states and 20226 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-12-02 10:39:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:39:31,642 INFO L93 Difference]: Finished difference Result 14012 states and 20258 transitions. [2024-12-02 10:39:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:31,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 374 [2024-12-02 10:39:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:39:31,713 INFO L225 Difference]: With dead ends: 14012 [2024-12-02 10:39:31,713 INFO L226 Difference]: Without dead ends: 14009 [2024-12-02 10:39:31,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:31,723 INFO L435 NwaCegarLoop]: 1307 mSDtfsCounter, 0 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:39:31,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2609 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:39:31,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14009 states. [2024-12-02 10:39:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14009 to 14009. [2024-12-02 10:39:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14009 states, 9737 states have (on average 1.32977303070761) internal successors, (12948), 9880 states have internal predecessors, (12948), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-12-02 10:39:32,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14009 states to 14009 states and 20241 transitions. [2024-12-02 10:39:32,247 INFO L78 Accepts]: Start accepts. Automaton has 14009 states and 20241 transitions. Word has length 374 [2024-12-02 10:39:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:39:32,248 INFO L471 AbstractCegarLoop]: Abstraction has 14009 states and 20241 transitions. [2024-12-02 10:39:32,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-12-02 10:39:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 14009 states and 20241 transitions. [2024-12-02 10:39:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-12-02 10:39:32,271 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:32,271 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:32,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:39:32,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 10:39:32,472 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:32,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:32,472 INFO L85 PathProgramCache]: Analyzing trace with hash 542324282, now seen corresponding path program 1 times [2024-12-02 10:39:32,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:32,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970754018] [2024-12-02 10:39:32,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:32,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2024-12-02 10:39:35,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:35,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970754018] [2024-12-02 10:39:35,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970754018] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:39:35,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389741578] [2024-12-02 10:39:35,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:35,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:35,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:35,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:39:35,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:39:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:38,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:39:38,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:39:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2024-12-02 10:39:38,538 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:39:38,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389741578] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:38,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:39:38,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 10:39:38,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762669592] [2024-12-02 10:39:38,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:38,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:38,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:38,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:38,541 INFO L87 Difference]: Start difference. First operand 14009 states and 20241 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-12-02 10:39:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:39:38,868 INFO L93 Difference]: Finished difference Result 28023 states and 40561 transitions. [2024-12-02 10:39:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:38,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 376 [2024-12-02 10:39:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:39:38,967 INFO L225 Difference]: With dead ends: 28023 [2024-12-02 10:39:38,967 INFO L226 Difference]: Without dead ends: 14024 [2024-12-02 10:39:39,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:39,041 INFO L435 NwaCegarLoop]: 1307 mSDtfsCounter, 0 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:39:39,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2610 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:39:39,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14024 states. [2024-12-02 10:39:39,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14024 to 14024. [2024-12-02 10:39:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14024 states, 9752 states have (on average 1.3292657916324857) internal successors, (12963), 9895 states have internal predecessors, (12963), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-12-02 10:39:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14024 states to 14024 states and 20256 transitions. [2024-12-02 10:39:39,615 INFO L78 Accepts]: Start accepts. Automaton has 14024 states and 20256 transitions. Word has length 376 [2024-12-02 10:39:39,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:39:39,668 INFO L471 AbstractCegarLoop]: Abstraction has 14024 states and 20256 transitions. [2024-12-02 10:39:39,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-12-02 10:39:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 14024 states and 20256 transitions. [2024-12-02 10:39:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-12-02 10:39:39,686 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:39,686 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:39,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:39:39,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 10:39:39,887 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:39,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:39,888 INFO L85 PathProgramCache]: Analyzing trace with hash 890731929, now seen corresponding path program 1 times [2024-12-02 10:39:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:39,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898365878] [2024-12-02 10:39:39,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:39,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2024-12-02 10:39:42,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898365878] [2024-12-02 10:39:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898365878] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:39:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257414145] [2024-12-02 10:39:42,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:42,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:42,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:42,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:39:42,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:39:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:45,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:39:45,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:39:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1268 proven. 0 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2024-12-02 10:39:45,743 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:39:45,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257414145] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:45,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:39:45,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 10:39:45,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867733287] [2024-12-02 10:39:45,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:45,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:45,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:45,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:45,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:45,746 INFO L87 Difference]: Start difference. First operand 14024 states and 20256 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-12-02 10:39:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:39:46,156 INFO L93 Difference]: Finished difference Result 28053 states and 40561 transitions. [2024-12-02 10:39:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:46,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 377 [2024-12-02 10:39:46,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:39:46,253 INFO L225 Difference]: With dead ends: 28053 [2024-12-02 10:39:46,253 INFO L226 Difference]: Without dead ends: 14039 [2024-12-02 10:39:46,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:46,321 INFO L435 NwaCegarLoop]: 1307 mSDtfsCounter, 0 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:39:46,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2608 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:39:46,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14039 states. [2024-12-02 10:39:46,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14039 to 14039. [2024-12-02 10:39:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14039 states, 9767 states have (on average 1.3287601105764308) internal successors, (12978), 9910 states have internal predecessors, (12978), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-12-02 10:39:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14039 states to 14039 states and 20271 transitions. [2024-12-02 10:39:46,821 INFO L78 Accepts]: Start accepts. Automaton has 14039 states and 20271 transitions. Word has length 377 [2024-12-02 10:39:46,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:39:46,822 INFO L471 AbstractCegarLoop]: Abstraction has 14039 states and 20271 transitions. [2024-12-02 10:39:46,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2024-12-02 10:39:46,822 INFO L276 IsEmpty]: Start isEmpty. Operand 14039 states and 20271 transitions. [2024-12-02 10:39:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2024-12-02 10:39:46,842 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:46,842 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:46,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:39:47,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:47,043 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:47,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1829052073, now seen corresponding path program 1 times [2024-12-02 10:39:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:47,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259869905] [2024-12-02 10:39:47,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:47,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2024-12-02 10:39:49,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:49,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259869905] [2024-12-02 10:39:49,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259869905] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:39:49,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635522224] [2024-12-02 10:39:49,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:49,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:49,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:49,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:39:49,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:39:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:52,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 2816 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:39:52,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:39:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 1035 proven. 0 refuted. 0 times theorem prover too weak. 1448 trivial. 0 not checked. [2024-12-02 10:39:52,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:39:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635522224] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:52,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:39:52,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-12-02 10:39:52,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238461690] [2024-12-02 10:39:52,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:52,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:52,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:52,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:52,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:52,568 INFO L87 Difference]: Start difference. First operand 14039 states and 20271 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-12-02 10:39:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:39:52,879 INFO L93 Difference]: Finished difference Result 28083 states and 40591 transitions. [2024-12-02 10:39:52,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:52,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 378 [2024-12-02 10:39:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:39:52,952 INFO L225 Difference]: With dead ends: 28083 [2024-12-02 10:39:52,953 INFO L226 Difference]: Without dead ends: 14054 [2024-12-02 10:39:53,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:53,001 INFO L435 NwaCegarLoop]: 1307 mSDtfsCounter, 0 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:39:53,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2608 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:39:53,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14054 states. [2024-12-02 10:39:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14054 to 14054. [2024-12-02 10:39:53,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14054 states, 9782 states have (on average 1.3282559803721121) internal successors, (12993), 9925 states have internal predecessors, (12993), 3647 states have call successors, (3647), 625 states have call predecessors, (3647), 624 states have return successors, (3646), 3596 states have call predecessors, (3646), 3646 states have call successors, (3646) [2024-12-02 10:39:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14054 states to 14054 states and 20286 transitions. [2024-12-02 10:39:53,456 INFO L78 Accepts]: Start accepts. Automaton has 14054 states and 20286 transitions. Word has length 378 [2024-12-02 10:39:53,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:39:53,457 INFO L471 AbstractCegarLoop]: Abstraction has 14054 states and 20286 transitions. [2024-12-02 10:39:53,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (46), 2 states have call predecessors, (46), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-12-02 10:39:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand 14054 states and 20286 transitions. [2024-12-02 10:39:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-12-02 10:39:53,471 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:39:53,471 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:53,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:39:53,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:53,672 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:39:53,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:53,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1255006684, now seen corresponding path program 1 times [2024-12-02 10:39:53,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804892877] [2024-12-02 10:39:53,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:53,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2024-12-02 10:39:56,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:56,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804892877] [2024-12-02 10:39:56,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804892877] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:39:56,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288467562] [2024-12-02 10:39:56,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:56,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:56,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:56,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:39:56,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:39:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:59,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:39:59,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:39:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:39:59,559 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:39:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288467562] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:59,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:39:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-12-02 10:39:59,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85344834] [2024-12-02 10:39:59,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:59,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:39:59,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:59,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:39:59,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:39:59,561 INFO L87 Difference]: Start difference. First operand 14054 states and 20286 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:40:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:40:00,642 INFO L93 Difference]: Finished difference Result 35184 states and 50752 transitions. [2024-12-02 10:40:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:40:00,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 339 [2024-12-02 10:40:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:40:00,742 INFO L225 Difference]: With dead ends: 35184 [2024-12-02 10:40:00,742 INFO L226 Difference]: Without dead ends: 21140 [2024-12-02 10:40:00,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-12-02 10:40:00,799 INFO L435 NwaCegarLoop]: 1368 mSDtfsCounter, 1321 mSDsluCounter, 6758 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 8126 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:40:00,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 8126 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:40:00,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21140 states. [2024-12-02 10:40:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21140 to 20991. [2024-12-02 10:40:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20991 states, 14623 states have (on average 1.3288654858784108) internal successors, (19432), 14845 states have internal predecessors, (19432), 5427 states have call successors, (5427), 933 states have call predecessors, (5427), 940 states have return successors, (5446), 5350 states have call predecessors, (5446), 5426 states have call successors, (5446) [2024-12-02 10:40:01,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20991 states to 20991 states and 30305 transitions. [2024-12-02 10:40:01,501 INFO L78 Accepts]: Start accepts. Automaton has 20991 states and 30305 transitions. Word has length 339 [2024-12-02 10:40:01,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:40:01,502 INFO L471 AbstractCegarLoop]: Abstraction has 20991 states and 30305 transitions. [2024-12-02 10:40:01,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:40:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 20991 states and 30305 transitions. [2024-12-02 10:40:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-12-02 10:40:01,532 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:40:01,533 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:40:01,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:40:01,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 10:40:01,733 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:40:01,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1485998930, now seen corresponding path program 1 times [2024-12-02 10:40:01,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:01,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614628715] [2024-12-02 10:40:01,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:01,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:40:04,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:04,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614628715] [2024-12-02 10:40:04,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614628715] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:40:04,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460199222] [2024-12-02 10:40:04,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:04,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:04,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:40:04,139 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:40:04,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:40:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:07,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:40:07,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:40:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:40:07,680 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:40:07,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460199222] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:40:07,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:40:07,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-12-02 10:40:07,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060540079] [2024-12-02 10:40:07,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:40:07,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:40:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:07,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:40:07,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:40:07,682 INFO L87 Difference]: Start difference. First operand 20991 states and 30305 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:40:09,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:40:09,056 INFO L93 Difference]: Finished difference Result 49111 states and 70836 transitions. [2024-12-02 10:40:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:40:09,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 340 [2024-12-02 10:40:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:40:09,211 INFO L225 Difference]: With dead ends: 49111 [2024-12-02 10:40:09,211 INFO L226 Difference]: Without dead ends: 28130 [2024-12-02 10:40:09,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-12-02 10:40:09,297 INFO L435 NwaCegarLoop]: 1759 mSDtfsCounter, 1321 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:40:09,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 10067 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:40:09,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28130 states. [2024-12-02 10:40:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28130 to 27960. [2024-12-02 10:40:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27960 states, 19484 states have (on average 1.3288339150071853) internal successors, (25891), 19801 states have internal predecessors, (25891), 7207 states have call successors, (7207), 1241 states have call predecessors, (7207), 1268 states have return successors, (7258), 7100 states have call predecessors, (7258), 7206 states have call successors, (7258) [2024-12-02 10:40:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27960 states to 27960 states and 40356 transitions. [2024-12-02 10:40:10,218 INFO L78 Accepts]: Start accepts. Automaton has 27960 states and 40356 transitions. Word has length 340 [2024-12-02 10:40:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:40:10,218 INFO L471 AbstractCegarLoop]: Abstraction has 27960 states and 40356 transitions. [2024-12-02 10:40:10,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:40:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 27960 states and 40356 transitions. [2024-12-02 10:40:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-12-02 10:40:10,261 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:40:10,261 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:40:10,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:40:10,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:10,461 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:40:10,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:10,462 INFO L85 PathProgramCache]: Analyzing trace with hash 640497955, now seen corresponding path program 1 times [2024-12-02 10:40:10,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:10,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677995362] [2024-12-02 10:40:10,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:10,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:40:12,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:12,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677995362] [2024-12-02 10:40:12,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677995362] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:40:12,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071962183] [2024-12-02 10:40:12,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:12,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:12,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:40:12,942 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:40:12,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:40:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:15,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:40:15,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:40:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:40:16,285 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:40:16,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071962183] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:40:16,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:40:16,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-12-02 10:40:16,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248422089] [2024-12-02 10:40:16,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:40:16,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:40:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:16,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:40:16,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:40:16,287 INFO L87 Difference]: Start difference. First operand 27960 states and 40356 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:40:17,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:40:17,671 INFO L93 Difference]: Finished difference Result 63038 states and 90920 transitions. [2024-12-02 10:40:17,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:40:17,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 341 [2024-12-02 10:40:17,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:40:17,841 INFO L225 Difference]: With dead ends: 63038 [2024-12-02 10:40:17,841 INFO L226 Difference]: Without dead ends: 35088 [2024-12-02 10:40:17,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-12-02 10:40:17,946 INFO L435 NwaCegarLoop]: 1759 mSDtfsCounter, 1321 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:40:17,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 10067 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:40:17,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35088 states. [2024-12-02 10:40:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35088 to 27982. [2024-12-02 10:40:18,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27982 states, 19500 states have (on average 1.3285641025641026) internal successors, (25907), 19819 states have internal predecessors, (25907), 7207 states have call successors, (7207), 1241 states have call predecessors, (7207), 1274 states have return successors, (7267), 7104 states have call predecessors, (7267), 7206 states have call successors, (7267) [2024-12-02 10:40:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27982 states to 27982 states and 40381 transitions. [2024-12-02 10:40:18,939 INFO L78 Accepts]: Start accepts. Automaton has 27982 states and 40381 transitions. Word has length 341 [2024-12-02 10:40:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:40:18,939 INFO L471 AbstractCegarLoop]: Abstraction has 27982 states and 40381 transitions. [2024-12-02 10:40:18,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:40:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 27982 states and 40381 transitions. [2024-12-02 10:40:18,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-12-02 10:40:18,972 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:40:18,972 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:40:18,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:40:19,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:19,173 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:40:19,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:19,173 INFO L85 PathProgramCache]: Analyzing trace with hash -959250347, now seen corresponding path program 1 times [2024-12-02 10:40:19,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:19,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359857457] [2024-12-02 10:40:19,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:19,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:40:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359857457] [2024-12-02 10:40:21,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359857457] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:40:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498341318] [2024-12-02 10:40:21,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:21,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:21,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:40:21,578 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:40:21,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:40:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:24,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:40:24,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:40:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1720 trivial. 0 not checked. [2024-12-02 10:40:24,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:40:24,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498341318] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:40:24,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:40:24,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-12-02 10:40:24,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928519784] [2024-12-02 10:40:24,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:40:24,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:40:24,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:24,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:40:24,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:40:24,998 INFO L87 Difference]: Start difference. First operand 27982 states and 40381 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:40:26,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:40:26,484 INFO L93 Difference]: Finished difference Result 63068 states and 90953 transitions. [2024-12-02 10:40:26,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 10:40:26,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 342 [2024-12-02 10:40:26,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:40:26,654 INFO L225 Difference]: With dead ends: 63068 [2024-12-02 10:40:26,654 INFO L226 Difference]: Without dead ends: 35096 [2024-12-02 10:40:26,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-12-02 10:40:26,759 INFO L435 NwaCegarLoop]: 1759 mSDtfsCounter, 1321 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 10067 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:40:26,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 10067 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:40:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35096 states. [2024-12-02 10:40:27,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35096 to 27995. [2024-12-02 10:40:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27995 states, 19510 states have (on average 1.328395694515633) internal successors, (25917), 19828 states have internal predecessors, (25917), 7207 states have call successors, (7207), 1241 states have call predecessors, (7207), 1277 states have return successors, (7270), 7108 states have call predecessors, (7270), 7206 states have call successors, (7270) [2024-12-02 10:40:27,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27995 states to 27995 states and 40394 transitions. [2024-12-02 10:40:27,855 INFO L78 Accepts]: Start accepts. Automaton has 27995 states and 40394 transitions. Word has length 342 [2024-12-02 10:40:27,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:40:27,855 INFO L471 AbstractCegarLoop]: Abstraction has 27995 states and 40394 transitions. [2024-12-02 10:40:27,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2024-12-02 10:40:27,855 INFO L276 IsEmpty]: Start isEmpty. Operand 27995 states and 40394 transitions. [2024-12-02 10:40:27,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-12-02 10:40:27,888 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:40:27,889 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:40:27,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:40:28,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 10:40:28,089 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:40:28,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:28,089 INFO L85 PathProgramCache]: Analyzing trace with hash -758093591, now seen corresponding path program 1 times [2024-12-02 10:40:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:28,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923822406] [2024-12-02 10:40:28,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:28,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 2478 trivial. 0 not checked. [2024-12-02 10:40:30,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:30,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923822406] [2024-12-02 10:40:30,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923822406] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:40:30,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807456051] [2024-12-02 10:40:30,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:30,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:30,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:40:30,910 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:40:30,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:40:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:34,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 2884 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:40:34,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:40:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 2482 trivial. 0 not checked. [2024-12-02 10:40:34,954 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:40:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2024-12-02 10:40:37,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807456051] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:40:37,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:40:37,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 18 [2024-12-02 10:40:37,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423612562] [2024-12-02 10:40:37,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:40:37,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 10:40:37,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:37,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 10:40:37,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:40:37,872 INFO L87 Difference]: Start difference. First operand 27995 states and 40394 transitions. Second operand has 18 states, 18 states have (on average 12.333333333333334) internal successors, (222), 14 states have internal predecessors, (222), 5 states have call successors, (92), 4 states have call predecessors, (92), 7 states have return successors, (87), 6 states have call predecessors, (87), 5 states have call successors, (87) [2024-12-02 10:40:41,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:40:45,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:40:50,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:40:54,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:41:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:41:36,576 INFO L93 Difference]: Finished difference Result 75356 states and 108874 transitions. [2024-12-02 10:41:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-12-02 10:41:36,577 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.333333333333334) internal successors, (222), 14 states have internal predecessors, (222), 5 states have call successors, (92), 4 states have call predecessors, (92), 7 states have return successors, (87), 6 states have call predecessors, (87), 5 states have call successors, (87) Word has length 394 [2024-12-02 10:41:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:41:36,874 INFO L225 Difference]: With dead ends: 75356 [2024-12-02 10:41:36,875 INFO L226 Difference]: Without dead ends: 47343 [2024-12-02 10:41:36,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 780 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=785, Invalid=5695, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 10:41:36,955 INFO L435 NwaCegarLoop]: 2984 mSDtfsCounter, 7712 mSDsluCounter, 29930 mSDsCounter, 0 mSdLazyCounter, 6344 mSolverCounterSat, 1782 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7733 SdHoareTripleChecker+Valid, 32914 SdHoareTripleChecker+Invalid, 8130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1782 IncrementalHoareTripleChecker+Valid, 6344 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:41:36,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7733 Valid, 32914 Invalid, 8130 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1782 Valid, 6344 Invalid, 4 Unknown, 0 Unchecked, 50.4s Time] [2024-12-02 10:41:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47343 states. [2024-12-02 10:41:38,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47343 to 45153. [2024-12-02 10:41:38,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45153 states, 31473 states have (on average 1.328662663235154) internal successors, (41817), 31996 states have internal predecessors, (41817), 11614 states have call successors, (11614), 2004 states have call predecessors, (11614), 2065 states have return successors, (11720), 11446 states have call predecessors, (11720), 11613 states have call successors, (11720) [2024-12-02 10:41:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45153 states to 45153 states and 65151 transitions. [2024-12-02 10:41:38,491 INFO L78 Accepts]: Start accepts. Automaton has 45153 states and 65151 transitions. Word has length 394 [2024-12-02 10:41:38,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:41:38,491 INFO L471 AbstractCegarLoop]: Abstraction has 45153 states and 65151 transitions. [2024-12-02 10:41:38,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.333333333333334) internal successors, (222), 14 states have internal predecessors, (222), 5 states have call successors, (92), 4 states have call predecessors, (92), 7 states have return successors, (87), 6 states have call predecessors, (87), 5 states have call successors, (87) [2024-12-02 10:41:38,491 INFO L276 IsEmpty]: Start isEmpty. Operand 45153 states and 65151 transitions. [2024-12-02 10:41:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-12-02 10:41:38,548 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:41:38,549 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:41:38,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 10:41:38,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 10:41:38,749 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:41:38,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:38,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1469713066, now seen corresponding path program 1 times [2024-12-02 10:41:38,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:38,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304879511] [2024-12-02 10:41:38,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2024-12-02 10:41:41,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304879511] [2024-12-02 10:41:41,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304879511] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:41,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219572617] [2024-12-02 10:41:41,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:41,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:41,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:41,234 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:41,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:41:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:44,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:41:44,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 1726 trivial. 0 not checked. [2024-12-02 10:41:45,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:41:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 1727 trivial. 0 not checked. [2024-12-02 10:41:49,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219572617] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:41:49,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:41:49,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 18 [2024-12-02 10:41:49,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820121019] [2024-12-02 10:41:49,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:41:49,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 10:41:49,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:49,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 10:41:49,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:41:49,025 INFO L87 Difference]: Start difference. First operand 45153 states and 65151 transitions. Second operand has 18 states, 18 states have (on average 11.277777777777779) internal successors, (203), 14 states have internal predecessors, (203), 5 states have call successors, (76), 4 states have call predecessors, (76), 7 states have return successors, (71), 6 states have call predecessors, (71), 5 states have call successors, (71) [2024-12-02 10:41:53,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:41:57,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:42:01,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:42:05,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:42:39,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:39,360 INFO L93 Difference]: Finished difference Result 109700 states and 158416 transitions. [2024-12-02 10:42:39,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-12-02 10:42:39,360 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.277777777777779) internal successors, (203), 14 states have internal predecessors, (203), 5 states have call successors, (76), 4 states have call predecessors, (76), 7 states have return successors, (71), 6 states have call predecessors, (71), 5 states have call successors, (71) Word has length 355 [2024-12-02 10:42:39,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:39,696 INFO L225 Difference]: With dead ends: 109700 [2024-12-02 10:42:39,696 INFO L226 Difference]: Without dead ends: 64529 [2024-12-02 10:42:39,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 702 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=785, Invalid=5695, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 10:42:39,878 INFO L435 NwaCegarLoop]: 1975 mSDtfsCounter, 9119 mSDsluCounter, 22781 mSDsCounter, 0 mSdLazyCounter, 4090 mSolverCounterSat, 2469 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9140 SdHoareTripleChecker+Valid, 24756 SdHoareTripleChecker+Invalid, 6563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2469 IncrementalHoareTripleChecker+Valid, 4090 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:39,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9140 Valid, 24756 Invalid, 6563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2469 Valid, 4090 Invalid, 4 Unknown, 0 Unchecked, 41.1s Time] [2024-12-02 10:42:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64529 states. [2024-12-02 10:42:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64529 to 46920. [2024-12-02 10:42:41,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46920 states, 32701 states have (on average 1.328766704382129) internal successors, (43452), 33245 states have internal predecessors, (43452), 12075 states have call successors, (12075), 2080 states have call predecessors, (12075), 2143 states have return successors, (12184), 11900 states have call predecessors, (12184), 12074 states have call successors, (12184) [2024-12-02 10:42:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46920 states to 46920 states and 67711 transitions. [2024-12-02 10:42:41,753 INFO L78 Accepts]: Start accepts. Automaton has 46920 states and 67711 transitions. Word has length 355 [2024-12-02 10:42:41,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:41,753 INFO L471 AbstractCegarLoop]: Abstraction has 46920 states and 67711 transitions. [2024-12-02 10:42:41,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.277777777777779) internal successors, (203), 14 states have internal predecessors, (203), 5 states have call successors, (76), 4 states have call predecessors, (76), 7 states have return successors, (71), 6 states have call predecessors, (71), 5 states have call successors, (71) [2024-12-02 10:42:41,753 INFO L276 IsEmpty]: Start isEmpty. Operand 46920 states and 67711 transitions. [2024-12-02 10:42:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-12-02 10:42:41,812 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:41,813 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:41,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 10:42:42,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 10:42:42,013 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:42,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:42,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2118985012, now seen corresponding path program 1 times [2024-12-02 10:42:42,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:42,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693881474] [2024-12-02 10:42:42,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:42,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2484 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2482 trivial. 0 not checked. [2024-12-02 10:42:44,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693881474] [2024-12-02 10:42:44,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693881474] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:44,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:44,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:42:44,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590958705] [2024-12-02 10:42:44,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:44,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:42:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:44,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:42:44,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:42:44,012 INFO L87 Difference]: Start difference. First operand 46920 states and 67711 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-12-02 10:42:46,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:42:46,219 INFO L93 Difference]: Finished difference Result 126958 states and 183587 transitions. [2024-12-02 10:42:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:42:46,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 395 [2024-12-02 10:42:46,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:42:46,658 INFO L225 Difference]: With dead ends: 126958 [2024-12-02 10:42:46,658 INFO L226 Difference]: Without dead ends: 80048 [2024-12-02 10:42:47,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:42:47,014 INFO L435 NwaCegarLoop]: 1307 mSDtfsCounter, 947 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:42:47,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 2540 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:42:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80048 states. [2024-12-02 10:42:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80048 to 79505. [2024-12-02 10:42:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79505 states, 55291 states have (on average 1.3293664430015735) internal successors, (73502), 56271 states have internal predecessors, (73502), 20597 states have call successors, (20597), 3489 states have call predecessors, (20597), 3616 states have return successors, (21032), 20194 states have call predecessors, (21032), 20596 states have call successors, (21032) [2024-12-02 10:42:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79505 states to 79505 states and 115131 transitions. [2024-12-02 10:42:50,075 INFO L78 Accepts]: Start accepts. Automaton has 79505 states and 115131 transitions. Word has length 395 [2024-12-02 10:42:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:42:50,076 INFO L471 AbstractCegarLoop]: Abstraction has 79505 states and 115131 transitions. [2024-12-02 10:42:50,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2024-12-02 10:42:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 79505 states and 115131 transitions. [2024-12-02 10:42:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-12-02 10:42:50,080 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:42:50,081 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:50,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 10:42:50,081 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:42:50,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:50,081 INFO L85 PathProgramCache]: Analyzing trace with hash 348344656, now seen corresponding path program 1 times [2024-12-02 10:42:50,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:50,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833868236] [2024-12-02 10:42:50,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:50,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 2478 trivial. 0 not checked. [2024-12-02 10:42:52,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833868236] [2024-12-02 10:42:52,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833868236] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842344117] [2024-12-02 10:42:52,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:52,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:52,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:52,651 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:52,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 10:42:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:56,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:42:56,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:42:57,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 2482 trivial. 0 not checked. [2024-12-02 10:42:57,651 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:43:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2024-12-02 10:43:01,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842344117] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:43:01,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:43:01,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 18 [2024-12-02 10:43:01,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243061333] [2024-12-02 10:43:01,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:43:01,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 10:43:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:01,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 10:43:01,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:43:01,906 INFO L87 Difference]: Start difference. First operand 79505 states and 115131 transitions. Second operand has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 14 states have internal predecessors, (226), 5 states have call successors, (92), 4 states have call predecessors, (92), 7 states have return successors, (87), 6 states have call predecessors, (87), 5 states have call successors, (87) [2024-12-02 10:43:05,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:43:09,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:43:14,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:43:18,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:44:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:44:04,199 INFO L93 Difference]: Finished difference Result 179387 states and 259861 transitions. [2024-12-02 10:44:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-12-02 10:44:04,200 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 14 states have internal predecessors, (226), 5 states have call successors, (92), 4 states have call predecessors, (92), 7 states have return successors, (87), 6 states have call predecessors, (87), 5 states have call successors, (87) Word has length 396 [2024-12-02 10:44:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:44:04,704 INFO L225 Difference]: With dead ends: 179387 [2024-12-02 10:44:04,704 INFO L226 Difference]: Without dead ends: 99846 [2024-12-02 10:44:05,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 784 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=785, Invalid=5695, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 10:44:05,017 INFO L435 NwaCegarLoop]: 2283 mSDtfsCounter, 8324 mSDsluCounter, 29543 mSDsCounter, 0 mSdLazyCounter, 5954 mSolverCounterSat, 2263 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8345 SdHoareTripleChecker+Valid, 31826 SdHoareTripleChecker+Invalid, 8221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2263 IncrementalHoareTripleChecker+Valid, 5954 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:44:05,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8345 Valid, 31826 Invalid, 8221 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2263 Valid, 5954 Invalid, 4 Unknown, 0 Unchecked, 51.1s Time] [2024-12-02 10:44:05,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99846 states. [2024-12-02 10:44:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99846 to 69248. [2024-12-02 10:44:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69248 states, 48148 states have (on average 1.3293594749522306) internal successors, (64006), 48976 states have internal predecessors, (64006), 17963 states have call successors, (17963), 3037 states have call predecessors, (17963), 3136 states have return successors, (18334), 17627 states have call predecessors, (18334), 17962 states have call successors, (18334) [2024-12-02 10:44:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69248 states to 69248 states and 100303 transitions. [2024-12-02 10:44:08,091 INFO L78 Accepts]: Start accepts. Automaton has 69248 states and 100303 transitions. Word has length 396 [2024-12-02 10:44:08,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:44:08,091 INFO L471 AbstractCegarLoop]: Abstraction has 69248 states and 100303 transitions. [2024-12-02 10:44:08,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.555555555555555) internal successors, (226), 14 states have internal predecessors, (226), 5 states have call successors, (92), 4 states have call predecessors, (92), 7 states have return successors, (87), 6 states have call predecessors, (87), 5 states have call successors, (87) [2024-12-02 10:44:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 69248 states and 100303 transitions. [2024-12-02 10:44:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2024-12-02 10:44:08,423 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:44:08,423 INFO L218 NwaCegarLoop]: trace histogram [106, 106, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:44:08,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 10:44:08,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 10:44:08,624 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:44:08,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:44:08,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1303908255, now seen corresponding path program 1 times [2024-12-02 10:44:08,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:44:08,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966901355] [2024-12-02 10:44:08,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:44:08,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:44:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:44:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 17468 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17463 trivial. 0 not checked. [2024-12-02 10:44:10,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:44:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966901355] [2024-12-02 10:44:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966901355] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:44:10,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:44:10,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:44:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828197860] [2024-12-02 10:44:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:44:10,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:44:10,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:44:10,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:44:10,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:44:10,948 INFO L87 Difference]: Start difference. First operand 69248 states and 100303 transitions. Second operand has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 3 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2024-12-02 10:44:14,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 10:44:29,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:44:29,420 INFO L93 Difference]: Finished difference Result 319833 states and 465717 transitions. [2024-12-02 10:44:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:44:29,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 3 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 898 [2024-12-02 10:44:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:44:30,804 INFO L225 Difference]: With dead ends: 319833 [2024-12-02 10:44:30,804 INFO L226 Difference]: Without dead ends: 250605 [2024-12-02 10:44:31,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:44:31,161 INFO L435 NwaCegarLoop]: 2786 mSDtfsCounter, 3369 mSDsluCounter, 4615 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 577 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 7401 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:44:31,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3369 Valid, 7401 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 1139 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2024-12-02 10:44:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250605 states. [2024-12-02 10:44:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250605 to 214427. [2024-12-02 10:44:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214427 states, 150706 states have (on average 1.322860403699919) internal successors, (199363), 153506 states have internal predecessors, (199363), 53373 states have call successors, (53373), 9996 states have call predecessors, (53373), 10347 states have return successors, (56172), 52268 states have call predecessors, (56172), 53372 states have call successors, (56172) [2024-12-02 10:44:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214427 states to 214427 states and 308908 transitions. [2024-12-02 10:44:41,349 INFO L78 Accepts]: Start accepts. Automaton has 214427 states and 308908 transitions. Word has length 898 [2024-12-02 10:44:41,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:44:41,349 INFO L471 AbstractCegarLoop]: Abstraction has 214427 states and 308908 transitions. [2024-12-02 10:44:41,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.2) internal successors, (211), 5 states have internal predecessors, (211), 3 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2024-12-02 10:44:41,349 INFO L276 IsEmpty]: Start isEmpty. Operand 214427 states and 308908 transitions. [2024-12-02 10:44:41,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2024-12-02 10:44:41,942 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:44:41,943 INFO L218 NwaCegarLoop]: trace histogram [113, 113, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:44:41,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 10:44:41,943 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:44:41,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:44:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash -249146834, now seen corresponding path program 1 times [2024-12-02 10:44:41,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:44:41,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195792984] [2024-12-02 10:44:41,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:44:41,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:44:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:44:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 19855 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19850 trivial. 0 not checked. [2024-12-02 10:44:45,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:44:45,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195792984] [2024-12-02 10:44:45,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195792984] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:44:45,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:44:45,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:44:45,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947479070] [2024-12-02 10:44:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:44:45,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:44:45,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:44:45,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:44:45,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:44:45,408 INFO L87 Difference]: Start difference. First operand 214427 states and 308908 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2024-12-02 10:44:53,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:44:53,918 INFO L93 Difference]: Finished difference Result 428350 states and 616350 transitions. [2024-12-02 10:44:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:44:53,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) Word has length 943 [2024-12-02 10:44:53,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:44:55,329 INFO L225 Difference]: With dead ends: 428350 [2024-12-02 10:44:55,329 INFO L226 Difference]: Without dead ends: 213947 [2024-12-02 10:44:56,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:44:56,251 INFO L435 NwaCegarLoop]: 1300 mSDtfsCounter, 1284 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2599 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:44:56,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 2599 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:44:56,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213947 states. [2024-12-02 10:45:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213947 to 213947. [2024-12-02 10:45:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213947 states, 150466 states have (on average 1.3201852910292027) internal successors, (198643), 153266 states have internal predecessors, (198643), 53133 states have call successors, (53133), 9996 states have call predecessors, (53133), 10347 states have return successors, (55212), 52028 states have call predecessors, (55212), 53132 states have call successors, (55212) [2024-12-02 10:45:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213947 states to 213947 states and 306988 transitions. [2024-12-02 10:45:05,504 INFO L78 Accepts]: Start accepts. Automaton has 213947 states and 306988 transitions. Word has length 943 [2024-12-02 10:45:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:45:05,505 INFO L471 AbstractCegarLoop]: Abstraction has 213947 states and 306988 transitions. [2024-12-02 10:45:05,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 3 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (73), 3 states have call predecessors, (73), 3 states have call successors, (73) [2024-12-02 10:45:05,505 INFO L276 IsEmpty]: Start isEmpty. Operand 213947 states and 306988 transitions. [2024-12-02 10:45:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2024-12-02 10:45:05,805 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:45:05,805 INFO L218 NwaCegarLoop]: trace histogram [107, 107, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:45:05,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 10:45:05,806 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:45:05,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:45:05,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1951478167, now seen corresponding path program 1 times [2024-12-02 10:45:05,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:45:05,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850560142] [2024-12-02 10:45:05,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:45:05,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:45:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:45:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17792 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17787 trivial. 0 not checked. [2024-12-02 10:45:08,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:45:08,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850560142] [2024-12-02 10:45:08,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850560142] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:45:08,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:45:08,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:45:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642586250] [2024-12-02 10:45:08,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:45:08,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:45:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:45:08,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:45:08,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:45:08,385 INFO L87 Difference]: Start difference. First operand 213947 states and 306988 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2024-12-02 10:45:17,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:45:17,121 INFO L93 Difference]: Finished difference Result 429950 states and 618110 transitions. [2024-12-02 10:45:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:45:17,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 918 [2024-12-02 10:45:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:45:18,546 INFO L225 Difference]: With dead ends: 429950 [2024-12-02 10:45:18,547 INFO L226 Difference]: Without dead ends: 216027 [2024-12-02 10:45:19,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:45:19,598 INFO L435 NwaCegarLoop]: 1293 mSDtfsCounter, 8 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:45:19,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2577 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:45:19,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216027 states. [2024-12-02 10:45:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216027 to 214427. [2024-12-02 10:45:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214427 states, 150946 states have (on average 1.319167119367191) internal successors, (199123), 153746 states have internal predecessors, (199123), 53133 states have call successors, (53133), 9996 states have call predecessors, (53133), 10347 states have return successors, (55212), 52028 states have call predecessors, (55212), 53132 states have call successors, (55212) [2024-12-02 10:45:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214427 states to 214427 states and 307468 transitions. [2024-12-02 10:45:28,877 INFO L78 Accepts]: Start accepts. Automaton has 214427 states and 307468 transitions. Word has length 918 [2024-12-02 10:45:28,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:45:28,877 INFO L471 AbstractCegarLoop]: Abstraction has 214427 states and 307468 transitions. [2024-12-02 10:45:28,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2024-12-02 10:45:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 214427 states and 307468 transitions. [2024-12-02 10:45:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2024-12-02 10:45:29,440 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:45:29,441 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:45:29,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 10:45:29,441 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:45:29,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:45:29,441 INFO L85 PathProgramCache]: Analyzing trace with hash -301582608, now seen corresponding path program 1 times [2024-12-02 10:45:29,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:45:29,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244711036] [2024-12-02 10:45:29,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:45:29,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:45:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:45:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 20540 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 20534 trivial. 0 not checked. [2024-12-02 10:45:31,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:45:31,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244711036] [2024-12-02 10:45:31,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244711036] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:45:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916224446] [2024-12-02 10:45:31,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:45:31,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:45:31,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:45:31,844 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:45:31,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab4a1ccf-a7ec-4d84-88da-a28ab74cb3aa/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 10:45:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:45:35,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 4959 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:45:35,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:45:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 20540 backedges. 4454 proven. 0 refuted. 0 times theorem prover too weak. 16086 trivial. 0 not checked. [2024-12-02 10:45:35,571 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:45:35,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916224446] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:45:35,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:45:35,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-12-02 10:45:35,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894980393] [2024-12-02 10:45:35,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:45:35,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:45:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:45:35,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:45:35,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:45:35,573 INFO L87 Difference]: Start difference. First operand 214427 states and 307468 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) [2024-12-02 10:45:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:45:43,415 INFO L93 Difference]: Finished difference Result 429070 states and 616350 transitions. [2024-12-02 10:45:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:45:43,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 2 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (90), 2 states have call predecessors, (90), 2 states have call successors, (90) Word has length 965 [2024-12-02 10:45:43,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:45:44,937 INFO L225 Difference]: With dead ends: 429070 [2024-12-02 10:45:44,937 INFO L226 Difference]: Without dead ends: 214667 [2024-12-02 10:45:45,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 965 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:45:45,705 INFO L435 NwaCegarLoop]: 1302 mSDtfsCounter, 0 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:45:45,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2600 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:45:45,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214667 states.