./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:13:24,422 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:13:24,551 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:13:24,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:13:24,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:13:24,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:13:24,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:13:24,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:13:24,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:13:24,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:13:24,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:13:24,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:13:24,620 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:13:24,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:13:24,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:13:24,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:13:24,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:13:24,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:13:24,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:13:24,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:13:24,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:13:24,626 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:13:24,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:13:24,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:13:24,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:13:24,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:24,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:13:24,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:13:24,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:13:24,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:13:24,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:13:24,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:13:24,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:13:24,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:13:24,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:13:24,634 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:13:24,635 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2023-11-06 22:13:24,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:13:25,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:13:25,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:13:25,006 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:13:25,008 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:13:25,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2023-11-06 22:13:28,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:13:28,831 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:13:28,832 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2023-11-06 22:13:28,894 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/data/91d1209ff/f5413440348d4245ad12b2a775e48d03/FLAG3b0a28b33 [2023-11-06 22:13:28,920 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/data/91d1209ff/f5413440348d4245ad12b2a775e48d03 [2023-11-06 22:13:28,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:13:28,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:13:28,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:28,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:13:28,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:13:28,939 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:28" (1/1) ... [2023-11-06 22:13:28,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef496f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:28, skipping insertion in model container [2023-11-06 22:13:28,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:28" (1/1) ... [2023-11-06 22:13:29,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:13:31,931 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2023-11-06 22:13:32,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:32,191 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:13:32,307 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [4162-4163] [2023-11-06 22:13:32,309 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsrq %1,%q0": "+r" (bitpos): "rm" (x)); [4172] [2023-11-06 22:13:32,309 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [4179] [2023-11-06 22:13:32,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [4210] [2023-11-06 22:13:32,313 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4213] [2023-11-06 22:13:32,314 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4216] [2023-11-06 22:13:32,314 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [4219] [2023-11-06 22:13:32,341 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (65), "i" (12UL)); [4519-4520] [2023-11-06 22:13:32,343 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (67), "i" (12UL)); [4527-4528] [2023-11-06 22:13:32,344 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (68), "i" (12UL)); [4535-4536] [2023-11-06 22:13:32,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (98), "i" (12UL)); [4562-4563] [2023-11-06 22:13:32,346 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"include/linux/scatterlist.h"), "i" (99), "i" (12UL)); [4570-4571] [2023-11-06 22:13:32,855 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2023-11-06 22:13:32,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:33,054 WARN L672 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:33,056 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:33,057 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:33,057 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:13:33,066 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:13:33,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33 WrapperNode [2023-11-06 22:13:33,068 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:33,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:33,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:13:33,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:13:33,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:33,281 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:33,589 INFO L138 Inliner]: procedures = 273, calls = 4220, calls flagged for inlining = 109, calls inlined = 100, statements flattened = 9859 [2023-11-06 22:13:33,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:33,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:13:33,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:13:33,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:13:33,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:33,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:33,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:33,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:34,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:34,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:34,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:34,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:34,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:13:34,309 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:13:34,310 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:13:34,310 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:13:34,311 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (1/1) ... [2023-11-06 22:13:34,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:34,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:34,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:13:34,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dee9a3ab-8ec3-4268-a14a-aefec7383204/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:13:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2023-11-06 22:13:34,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2023-11-06 22:13:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2023-11-06 22:13:34,427 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2023-11-06 22:13:34,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-06 22:13:34,428 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-06 22:13:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-06 22:13:34,428 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-06 22:13:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-06 22:13:34,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 22:13:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 22:13:34,429 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2023-11-06 22:13:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2023-11-06 22:13:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-06 22:13:34,430 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-06 22:13:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2023-11-06 22:13:34,431 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2023-11-06 22:13:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-06 22:13:34,432 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-06 22:13:34,432 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2023-11-06 22:13:34,433 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2023-11-06 22:13:34,435 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2023-11-06 22:13:34,435 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2023-11-06 22:13:34,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 22:13:34,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 22:13:34,436 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2023-11-06 22:13:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2023-11-06 22:13:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2023-11-06 22:13:34,437 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2023-11-06 22:13:34,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2023-11-06 22:13:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2023-11-06 22:13:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2023-11-06 22:13:34,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2023-11-06 22:13:34,438 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-06 22:13:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-06 22:13:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 22:13:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 22:13:34,439 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-06 22:13:34,439 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-06 22:13:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2023-11-06 22:13:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2023-11-06 22:13:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2023-11-06 22:13:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2023-11-06 22:13:34,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-06 22:13:34,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-06 22:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2023-11-06 22:13:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2023-11-06 22:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 22:13:34,441 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 22:13:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2023-11-06 22:13:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2023-11-06 22:13:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2023-11-06 22:13:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2023-11-06 22:13:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-06 22:13:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-06 22:13:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2023-11-06 22:13:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2023-11-06 22:13:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2023-11-06 22:13:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2023-11-06 22:13:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2023-11-06 22:13:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2023-11-06 22:13:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2023-11-06 22:13:34,446 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2023-11-06 22:13:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2023-11-06 22:13:34,446 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2023-11-06 22:13:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:13:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-06 22:13:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2023-11-06 22:13:34,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2023-11-06 22:13:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 22:13:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2023-11-06 22:13:34,448 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2023-11-06 22:13:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2023-11-06 22:13:34,448 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2023-11-06 22:13:34,448 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2023-11-06 22:13:34,449 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2023-11-06 22:13:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 22:13:34,449 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2023-11-06 22:13:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2023-11-06 22:13:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2023-11-06 22:13:34,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2023-11-06 22:13:34,450 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-06 22:13:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-06 22:13:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2023-11-06 22:13:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2023-11-06 22:13:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-11-06 22:13:34,451 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-11-06 22:13:34,451 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2023-11-06 22:13:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2023-11-06 22:13:34,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:13:34,452 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2023-11-06 22:13:34,452 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2023-11-06 22:13:34,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 22:13:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-06 22:13:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-06 22:13:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 22:13:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 22:13:34,453 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-06 22:13:34,453 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-06 22:13:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-06 22:13:34,454 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-06 22:13:34,454 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2023-11-06 22:13:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2023-11-06 22:13:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-06 22:13:34,455 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-06 22:13:34,455 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2023-11-06 22:13:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2023-11-06 22:13:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2023-11-06 22:13:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2023-11-06 22:13:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-06 22:13:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-06 22:13:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 22:13:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-06 22:13:34,458 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-06 22:13:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2023-11-06 22:13:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2023-11-06 22:13:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2023-11-06 22:13:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2023-11-06 22:13:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 22:13:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2023-11-06 22:13:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2023-11-06 22:13:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:13:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2023-11-06 22:13:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2023-11-06 22:13:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2023-11-06 22:13:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2023-11-06 22:13:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-06 22:13:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-06 22:13:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2023-11-06 22:13:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2023-11-06 22:13:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2023-11-06 22:13:34,462 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2023-11-06 22:13:34,462 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2023-11-06 22:13:34,463 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2023-11-06 22:13:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2023-11-06 22:13:34,463 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2023-11-06 22:13:34,463 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-06 22:13:34,463 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-06 22:13:34,464 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2023-11-06 22:13:34,465 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2023-11-06 22:13:34,469 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2023-11-06 22:13:34,469 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2023-11-06 22:13:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:13:34,470 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-06 22:13:34,471 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-06 22:13:34,471 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2023-11-06 22:13:34,472 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2023-11-06 22:13:34,473 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2023-11-06 22:13:34,474 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2023-11-06 22:13:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2023-11-06 22:13:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2023-11-06 22:13:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 22:13:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 22:13:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2023-11-06 22:13:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2023-11-06 22:13:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:13:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2023-11-06 22:13:34,481 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2023-11-06 22:13:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2023-11-06 22:13:34,481 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2023-11-06 22:13:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-06 22:13:34,481 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-06 22:13:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:13:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2023-11-06 22:13:34,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2023-11-06 22:13:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2023-11-06 22:13:34,482 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2023-11-06 22:13:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-11-06 22:13:34,483 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-11-06 22:13:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 22:13:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-06 22:13:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2023-11-06 22:13:34,483 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2023-11-06 22:13:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2023-11-06 22:13:34,483 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2023-11-06 22:13:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2023-11-06 22:13:34,484 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2023-11-06 22:13:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-06 22:13:34,484 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-06 22:13:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2023-11-06 22:13:34,484 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2023-11-06 22:13:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2023-11-06 22:13:34,485 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2023-11-06 22:13:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2023-11-06 22:13:34,485 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2023-11-06 22:13:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2023-11-06 22:13:34,485 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2023-11-06 22:13:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2023-11-06 22:13:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2023-11-06 22:13:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2023-11-06 22:13:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2023-11-06 22:13:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2023-11-06 22:13:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2023-11-06 22:13:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2023-11-06 22:13:34,487 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2023-11-06 22:13:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2023-11-06 22:13:34,487 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2023-11-06 22:13:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:13:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2023-11-06 22:13:34,487 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2023-11-06 22:13:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2023-11-06 22:13:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2023-11-06 22:13:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:13:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:13:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-06 22:13:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-06 22:13:36,043 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:13:36,047 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:13:56,514 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:13:56,552 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:13:56,552 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:13:56,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:56 BoogieIcfgContainer [2023-11-06 22:13:56,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:13:56,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:13:56,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:13:56,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:13:56,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:28" (1/3) ... [2023-11-06 22:13:56,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2ea4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:56, skipping insertion in model container [2023-11-06 22:13:56,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:33" (2/3) ... [2023-11-06 22:13:56,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2ea4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:56, skipping insertion in model container [2023-11-06 22:13:56,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:56" (3/3) ... [2023-11-06 22:13:56,579 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2023-11-06 22:13:56,605 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:13:56,606 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:13:56,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:13:56,807 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@664333b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:13:56,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:13:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 3438 states, 2606 states have (on average 1.453184957789716) internal successors, (3787), 2631 states have internal predecessors, (3787), 737 states have call successors, (737), 93 states have call predecessors, (737), 93 states have return successors, (737), 734 states have call predecessors, (737), 737 states have call successors, (737) [2023-11-06 22:13:56,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:13:56,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:56,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:13:56,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:56,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:56,855 INFO L85 PathProgramCache]: Analyzing trace with hash 75507521, now seen corresponding path program 1 times [2023-11-06 22:13:56,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:56,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724554954] [2023-11-06 22:13:56,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:56,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:13:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:13:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:13:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:13:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:13:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:13:57,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:57,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724554954] [2023-11-06 22:13:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724554954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:57,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:57,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:13:58,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807977833] [2023-11-06 22:13:58,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:58,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:58,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:13:58,065 INFO L87 Difference]: Start difference. First operand has 3438 states, 2606 states have (on average 1.453184957789716) internal successors, (3787), 2631 states have internal predecessors, (3787), 737 states have call successors, (737), 93 states have call predecessors, (737), 93 states have return successors, (737), 734 states have call predecessors, (737), 737 states have call successors, (737) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:14:06,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:06,024 INFO L93 Difference]: Finished difference Result 7110 states and 11192 transitions. [2023-11-06 22:14:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:06,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2023-11-06 22:14:06,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:06,134 INFO L225 Difference]: With dead ends: 7110 [2023-11-06 22:14:06,134 INFO L226 Difference]: Without dead ends: 3671 [2023-11-06 22:14:06,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:06,211 INFO L413 NwaCegarLoop]: 4603 mSDtfsCounter, 5634 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 1220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6137 SdHoareTripleChecker+Valid, 7797 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1220 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:06,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6137 Valid, 7797 Invalid, 2542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1220 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-06 22:14:06,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2023-11-06 22:14:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3427. [2023-11-06 22:14:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 2597 states have (on average 1.4435887562572198) internal successors, (3749), 2620 states have internal predecessors, (3749), 737 states have call successors, (737), 93 states have call predecessors, (737), 92 states have return successors, (729), 726 states have call predecessors, (729), 729 states have call successors, (729) [2023-11-06 22:14:06,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 5215 transitions. [2023-11-06 22:14:06,776 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 5215 transitions. Word has length 43 [2023-11-06 22:14:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:06,777 INFO L495 AbstractCegarLoop]: Abstraction has 3427 states and 5215 transitions. [2023-11-06 22:14:06,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:14:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 5215 transitions. [2023-11-06 22:14:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:14:06,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:06,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:06,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:14:06,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:06,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash 777107395, now seen corresponding path program 1 times [2023-11-06 22:14:06,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488888229] [2023-11-06 22:14:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:14:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:14:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:14:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:14:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:07,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:07,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488888229] [2023-11-06 22:14:07,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488888229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:07,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:07,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:07,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736024487] [2023-11-06 22:14:07,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:07,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:07,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:07,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:07,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:07,440 INFO L87 Difference]: Start difference. First operand 3427 states and 5215 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:14:14,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:14,910 INFO L93 Difference]: Finished difference Result 7089 states and 10863 transitions. [2023-11-06 22:14:14,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:14,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2023-11-06 22:14:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:14,963 INFO L225 Difference]: With dead ends: 7089 [2023-11-06 22:14:14,963 INFO L226 Difference]: Without dead ends: 3671 [2023-11-06 22:14:14,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:14,991 INFO L413 NwaCegarLoop]: 4599 mSDtfsCounter, 5607 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 1220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6109 SdHoareTripleChecker+Valid, 7789 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1220 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:14,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6109 Valid, 7789 Invalid, 2532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1220 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-06 22:14:15,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2023-11-06 22:14:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3427. [2023-11-06 22:14:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3427 states, 2597 states have (on average 1.4432036965729689) internal successors, (3748), 2620 states have internal predecessors, (3748), 737 states have call successors, (737), 93 states have call predecessors, (737), 92 states have return successors, (729), 726 states have call predecessors, (729), 729 states have call successors, (729) [2023-11-06 22:14:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3427 states to 3427 states and 5214 transitions. [2023-11-06 22:14:15,379 INFO L78 Accepts]: Start accepts. Automaton has 3427 states and 5214 transitions. Word has length 43 [2023-11-06 22:14:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:15,380 INFO L495 AbstractCegarLoop]: Abstraction has 3427 states and 5214 transitions. [2023-11-06 22:14:15,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-06 22:14:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3427 states and 5214 transitions. [2023-11-06 22:14:15,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:14:15,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:15,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:15,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:14:15,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:15,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash 799739649, now seen corresponding path program 1 times [2023-11-06 22:14:15,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:15,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192705360] [2023-11-06 22:14:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:15,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:14:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:14:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:14:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:14:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:15,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:15,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192705360] [2023-11-06 22:14:15,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192705360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:15,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:15,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:14:15,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218199724] [2023-11-06 22:14:15,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:15,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:14:15,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:15,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:14:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:15,909 INFO L87 Difference]: Start difference. First operand 3427 states and 5214 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-06 22:14:17,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:14:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:27,387 INFO L93 Difference]: Finished difference Result 8429 states and 13048 transitions. [2023-11-06 22:14:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:14:27,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2023-11-06 22:14:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:27,462 INFO L225 Difference]: With dead ends: 8429 [2023-11-06 22:14:27,463 INFO L226 Difference]: Without dead ends: 5040 [2023-11-06 22:14:27,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:14:27,490 INFO L413 NwaCegarLoop]: 4634 mSDtfsCounter, 2479 mSDsluCounter, 11670 mSDsCounter, 0 mSdLazyCounter, 3308 mSolverCounterSat, 1017 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2903 SdHoareTripleChecker+Valid, 16304 SdHoareTripleChecker+Invalid, 4325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 3308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:27,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2903 Valid, 16304 Invalid, 4325 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1017 Valid, 3308 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-11-06 22:14:27,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2023-11-06 22:14:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 3429. [2023-11-06 22:14:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3429 states, 2599 states have (on average 1.4428626394767219) internal successors, (3750), 2622 states have internal predecessors, (3750), 737 states have call successors, (737), 93 states have call predecessors, (737), 92 states have return successors, (729), 726 states have call predecessors, (729), 729 states have call successors, (729) [2023-11-06 22:14:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 5216 transitions. [2023-11-06 22:14:27,812 INFO L78 Accepts]: Start accepts. Automaton has 3429 states and 5216 transitions. Word has length 43 [2023-11-06 22:14:27,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:27,813 INFO L495 AbstractCegarLoop]: Abstraction has 3429 states and 5216 transitions. [2023-11-06 22:14:27,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-06 22:14:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 3429 states and 5216 transitions. [2023-11-06 22:14:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-06 22:14:27,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:27,822 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:14:27,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:14:27,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:27,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash 199498909, now seen corresponding path program 1 times [2023-11-06 22:14:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:27,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619082119] [2023-11-06 22:14:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:27,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:14:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:14:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:14:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:14:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:14:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:14:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:14:28,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:28,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619082119] [2023-11-06 22:14:28,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619082119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:28,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:28,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34246820] [2023-11-06 22:14:28,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:28,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:28,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:28,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:28,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:28,231 INFO L87 Difference]: Start difference. First operand 3429 states and 5216 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:14:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:35,258 INFO L93 Difference]: Finished difference Result 3675 states and 5662 transitions. [2023-11-06 22:14:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:35,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2023-11-06 22:14:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:35,306 INFO L225 Difference]: With dead ends: 3675 [2023-11-06 22:14:35,306 INFO L226 Difference]: Without dead ends: 3672 [2023-11-06 22:14:35,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:35,312 INFO L413 NwaCegarLoop]: 4597 mSDtfsCounter, 5590 mSDsluCounter, 3189 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6088 SdHoareTripleChecker+Valid, 7786 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1218 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:35,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6088 Valid, 7786 Invalid, 2531 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1218 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-06 22:14:35,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2023-11-06 22:14:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3428. [2023-11-06 22:14:35,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 2599 states have (on average 1.4424778761061947) internal successors, (3749), 2621 states have internal predecessors, (3749), 736 states have call successors, (736), 93 states have call predecessors, (736), 92 states have return successors, (729), 726 states have call predecessors, (729), 729 states have call successors, (729) [2023-11-06 22:14:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5214 transitions. [2023-11-06 22:14:35,670 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5214 transitions. Word has length 53 [2023-11-06 22:14:35,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:35,673 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5214 transitions. [2023-11-06 22:14:35,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:14:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5214 transitions. [2023-11-06 22:14:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:14:35,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:35,677 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:14:35,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:14:35,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:35,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1888129745, now seen corresponding path program 1 times [2023-11-06 22:14:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:35,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405338155] [2023-11-06 22:14:35,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:35,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:14:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:14:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:35,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:14:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:14:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:36,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:36,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:14:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:14:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:14:36,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:36,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405338155] [2023-11-06 22:14:36,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405338155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:36,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:36,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:36,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274354841] [2023-11-06 22:14:36,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:36,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:36,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:36,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:36,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:36,072 INFO L87 Difference]: Start difference. First operand 3428 states and 5214 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:14:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:46,066 INFO L93 Difference]: Finished difference Result 10661 states and 16380 transitions. [2023-11-06 22:14:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:14:46,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2023-11-06 22:14:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:46,145 INFO L225 Difference]: With dead ends: 10661 [2023-11-06 22:14:46,145 INFO L226 Difference]: Without dead ends: 7275 [2023-11-06 22:14:46,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:46,173 INFO L413 NwaCegarLoop]: 6642 mSDtfsCounter, 6229 mSDsluCounter, 8969 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 1584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6837 SdHoareTripleChecker+Valid, 15611 SdHoareTripleChecker+Invalid, 4310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1584 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:46,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6837 Valid, 15611 Invalid, 4310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1584 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-06 22:14:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7275 states. [2023-11-06 22:14:46,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7275 to 6782. [2023-11-06 22:14:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6782 states, 5152 states have (on average 1.4439052795031055) internal successors, (7439), 5191 states have internal predecessors, (7439), 1446 states have call successors, (1446), 185 states have call predecessors, (1446), 183 states have return successors, (1441), 1429 states have call predecessors, (1441), 1435 states have call successors, (1441) [2023-11-06 22:14:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6782 states to 6782 states and 10326 transitions. [2023-11-06 22:14:46,881 INFO L78 Accepts]: Start accepts. Automaton has 6782 states and 10326 transitions. Word has length 54 [2023-11-06 22:14:46,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:46,883 INFO L495 AbstractCegarLoop]: Abstraction has 6782 states and 10326 transitions. [2023-11-06 22:14:46,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:14:46,883 INFO L276 IsEmpty]: Start isEmpty. Operand 6782 states and 10326 transitions. [2023-11-06 22:14:46,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 22:14:46,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:46,885 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:14:46,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:14:46,886 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:46,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:46,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1598884320, now seen corresponding path program 1 times [2023-11-06 22:14:46,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:46,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929292095] [2023-11-06 22:14:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:46,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:14:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:14:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:14:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:14:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:14:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:14:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:14:47,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929292095] [2023-11-06 22:14:47,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929292095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:47,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:47,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:47,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373112967] [2023-11-06 22:14:47,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:47,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:47,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:47,164 INFO L87 Difference]: Start difference. First operand 6782 states and 10326 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:14:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:52,860 INFO L93 Difference]: Finished difference Result 7272 states and 11216 transitions. [2023-11-06 22:14:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:52,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2023-11-06 22:14:52,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:52,925 INFO L225 Difference]: With dead ends: 7272 [2023-11-06 22:14:52,925 INFO L226 Difference]: Without dead ends: 7269 [2023-11-06 22:14:52,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:14:52,934 INFO L413 NwaCegarLoop]: 4597 mSDtfsCounter, 5586 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 1217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6082 SdHoareTripleChecker+Valid, 7787 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1217 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:52,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6082 Valid, 7787 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1217 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-06 22:14:52,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2023-11-06 22:14:53,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 6781. [2023-11-06 22:14:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6781 states, 5152 states have (on average 1.4437111801242235) internal successors, (7438), 5190 states have internal predecessors, (7438), 1445 states have call successors, (1445), 185 states have call predecessors, (1445), 183 states have return successors, (1441), 1429 states have call predecessors, (1441), 1435 states have call successors, (1441) [2023-11-06 22:14:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6781 states to 6781 states and 10324 transitions. [2023-11-06 22:14:53,632 INFO L78 Accepts]: Start accepts. Automaton has 6781 states and 10324 transitions. Word has length 55 [2023-11-06 22:14:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:53,633 INFO L495 AbstractCegarLoop]: Abstraction has 6781 states and 10324 transitions. [2023-11-06 22:14:53,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:14:53,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6781 states and 10324 transitions. [2023-11-06 22:14:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:14:53,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:53,636 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:14:53,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:14:53,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:53,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:53,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1972834228, now seen corresponding path program 1 times [2023-11-06 22:14:53,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:53,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264045392] [2023-11-06 22:14:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:53,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:14:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:14:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:14:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:14:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:14:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:14:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:14:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:14:53,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:53,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264045392] [2023-11-06 22:14:53,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264045392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:53,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:53,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:53,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800740576] [2023-11-06 22:14:53,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:53,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:53,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:53,951 INFO L87 Difference]: Start difference. First operand 6781 states and 10324 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:15:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:01,723 INFO L93 Difference]: Finished difference Result 10325 states and 15664 transitions. [2023-11-06 22:15:01,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:15:01,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 56 [2023-11-06 22:15:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:01,810 INFO L225 Difference]: With dead ends: 10325 [2023-11-06 22:15:01,810 INFO L226 Difference]: Without dead ends: 10289 [2023-11-06 22:15:01,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:15:01,825 INFO L413 NwaCegarLoop]: 4608 mSDtfsCounter, 4319 mSDsluCounter, 6429 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 1461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4711 SdHoareTripleChecker+Valid, 11037 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1461 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:01,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4711 Valid, 11037 Invalid, 3575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1461 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-06 22:15:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10289 states. [2023-11-06 22:15:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10289 to 9437. [2023-11-06 22:15:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9437 states, 7087 states have (on average 1.422181459009454) internal successors, (10079), 7135 states have internal predecessors, (10079), 2030 states have call successors, (2030), 321 states have call predecessors, (2030), 319 states have return successors, (2028), 2014 states have call predecessors, (2028), 2022 states have call successors, (2028) [2023-11-06 22:15:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9437 states to 9437 states and 14137 transitions. [2023-11-06 22:15:02,761 INFO L78 Accepts]: Start accepts. Automaton has 9437 states and 14137 transitions. Word has length 56 [2023-11-06 22:15:02,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:02,761 INFO L495 AbstractCegarLoop]: Abstraction has 9437 states and 14137 transitions. [2023-11-06 22:15:02,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-06 22:15:02,762 INFO L276 IsEmpty]: Start isEmpty. Operand 9437 states and 14137 transitions. [2023-11-06 22:15:02,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 22:15:02,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:02,766 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:15:02,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:15:02,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:02,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:02,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1941290938, now seen corresponding path program 1 times [2023-11-06 22:15:02,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:02,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259209559] [2023-11-06 22:15:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:02,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:15:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:15:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:15:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:15:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:15:03,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:15:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 22:15:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 22:15:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 22:15:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:15:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-06 22:15:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:15:03,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:03,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259209559] [2023-11-06 22:15:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259209559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:03,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:03,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:15:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828995735] [2023-11-06 22:15:03,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:03,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:15:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:15:03,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:15:03,288 INFO L87 Difference]: Start difference. First operand 9437 states and 14137 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:15:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:19,552 INFO L93 Difference]: Finished difference Result 21038 states and 31917 transitions. [2023-11-06 22:15:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:15:19,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 95 [2023-11-06 22:15:19,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:19,632 INFO L225 Difference]: With dead ends: 21038 [2023-11-06 22:15:19,632 INFO L226 Difference]: Without dead ends: 11654 [2023-11-06 22:15:19,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:15:19,684 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 4685 mSDsluCounter, 4759 mSDsCounter, 0 mSdLazyCounter, 8779 mSolverCounterSat, 1791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5321 SdHoareTripleChecker+Valid, 6977 SdHoareTripleChecker+Invalid, 10570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1791 IncrementalHoareTripleChecker+Valid, 8779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:19,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5321 Valid, 6977 Invalid, 10570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1791 Valid, 8779 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-11-06 22:15:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11654 states. [2023-11-06 22:15:20,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11654 to 10365. [2023-11-06 22:15:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10365 states, 7840 states have (on average 1.430484693877551) internal successors, (11215), 7894 states have internal predecessors, (11215), 2205 states have call successors, (2205), 321 states have call predecessors, (2205), 319 states have return successors, (2205), 2186 states have call predecessors, (2205), 2197 states have call successors, (2205) [2023-11-06 22:15:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10365 states to 10365 states and 15625 transitions. [2023-11-06 22:15:20,768 INFO L78 Accepts]: Start accepts. Automaton has 10365 states and 15625 transitions. Word has length 95 [2023-11-06 22:15:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:20,769 INFO L495 AbstractCegarLoop]: Abstraction has 10365 states and 15625 transitions. [2023-11-06 22:15:20,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-06 22:15:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 10365 states and 15625 transitions. [2023-11-06 22:15:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-06 22:15:20,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:20,773 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:15:20,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:15:20,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:20,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1378850854, now seen corresponding path program 1 times [2023-11-06 22:15:20,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064411653] [2023-11-06 22:15:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:15:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:15:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:15:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:15:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:15:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:15:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:15:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 22:15:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 22:15:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:15:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:15:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:15:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:15:21,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064411653] [2023-11-06 22:15:21,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064411653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:21,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:21,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:15:21,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026605610] [2023-11-06 22:15:21,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:21,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:15:21,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:21,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:15:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:15:21,342 INFO L87 Difference]: Start difference. First operand 10365 states and 15625 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:15:38,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 22:15:51,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:51,682 INFO L93 Difference]: Finished difference Result 23786 states and 36340 transitions. [2023-11-06 22:15:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:15:51,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 99 [2023-11-06 22:15:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:51,768 INFO L225 Difference]: With dead ends: 23786 [2023-11-06 22:15:51,768 INFO L226 Difference]: Without dead ends: 13474 [2023-11-06 22:15:51,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:15:51,813 INFO L413 NwaCegarLoop]: 3964 mSDtfsCounter, 7952 mSDsluCounter, 20197 mSDsCounter, 0 mSdLazyCounter, 20494 mSolverCounterSat, 3769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8243 SdHoareTripleChecker+Valid, 24161 SdHoareTripleChecker+Invalid, 24263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3769 IncrementalHoareTripleChecker+Valid, 20494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:51,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8243 Valid, 24161 Invalid, 24263 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3769 Valid, 20494 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time] [2023-11-06 22:15:51,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13474 states. [2023-11-06 22:15:52,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13474 to 10357. [2023-11-06 22:15:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10357 states, 7836 states have (on average 1.4304492087799898) internal successors, (11209), 7890 states have internal predecessors, (11209), 2201 states have call successors, (2201), 321 states have call predecessors, (2201), 319 states have return successors, (2201), 2182 states have call predecessors, (2201), 2193 states have call successors, (2201) [2023-11-06 22:15:52,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10357 states to 10357 states and 15611 transitions. [2023-11-06 22:15:52,841 INFO L78 Accepts]: Start accepts. Automaton has 10357 states and 15611 transitions. Word has length 99 [2023-11-06 22:15:52,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:52,843 INFO L495 AbstractCegarLoop]: Abstraction has 10357 states and 15611 transitions. [2023-11-06 22:15:52,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-06 22:15:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 10357 states and 15611 transitions. [2023-11-06 22:15:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-06 22:15:52,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:52,848 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:15:52,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:15:52,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:52,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1119165083, now seen corresponding path program 1 times [2023-11-06 22:15:52,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:52,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724453956] [2023-11-06 22:15:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:52,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:15:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:15:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:15:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:15:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:15:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:15:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:15:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:15:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 22:15:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 22:15:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:15:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:15:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:15:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:15:53,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:53,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724453956] [2023-11-06 22:15:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724453956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:15:53,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:15:53,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:15:53,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945086639] [2023-11-06 22:15:53,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:15:53,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:15:53,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:53,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:15:53,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:15:53,249 INFO L87 Difference]: Start difference. First operand 10357 states and 15611 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 22:16:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:15,838 INFO L93 Difference]: Finished difference Result 11211 states and 17105 transitions. [2023-11-06 22:16:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:16:15,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 99 [2023-11-06 22:16:15,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:15,905 INFO L225 Difference]: With dead ends: 11211 [2023-11-06 22:16:15,906 INFO L226 Difference]: Without dead ends: 11208 [2023-11-06 22:16:15,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:16:15,915 INFO L413 NwaCegarLoop]: 2086 mSDtfsCounter, 8843 mSDsluCounter, 5740 mSDsCounter, 0 mSdLazyCounter, 11218 mSolverCounterSat, 4686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8993 SdHoareTripleChecker+Valid, 7826 SdHoareTripleChecker+Invalid, 15904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4686 IncrementalHoareTripleChecker+Valid, 11218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:15,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8993 Valid, 7826 Invalid, 15904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4686 Valid, 11218 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2023-11-06 22:16:15,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2023-11-06 22:16:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 10356. [2023-11-06 22:16:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10356 states, 7836 states have (on average 1.430193976518632) internal successors, (11207), 7889 states have internal predecessors, (11207), 2200 states have call successors, (2200), 321 states have call predecessors, (2200), 319 states have return successors, (2201), 2182 states have call predecessors, (2201), 2193 states have call successors, (2201) [2023-11-06 22:16:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10356 states to 10356 states and 15608 transitions. [2023-11-06 22:16:16,940 INFO L78 Accepts]: Start accepts. Automaton has 10356 states and 15608 transitions. Word has length 99 [2023-11-06 22:16:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:16,941 INFO L495 AbstractCegarLoop]: Abstraction has 10356 states and 15608 transitions. [2023-11-06 22:16:16,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-06 22:16:16,941 INFO L276 IsEmpty]: Start isEmpty. Operand 10356 states and 15608 transitions. [2023-11-06 22:16:16,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:16:16,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:16,946 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:16:16,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:16:16,946 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:16,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:16,947 INFO L85 PathProgramCache]: Analyzing trace with hash 939979149, now seen corresponding path program 1 times [2023-11-06 22:16:16,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:16,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953619112] [2023-11-06 22:16:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:16:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:16:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:16:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:16:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:16:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:16:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 22:16:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 22:16:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:16:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:16:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:16:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-06 22:16:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:16:17,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:16:17,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953619112] [2023-11-06 22:16:17,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953619112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:16:17,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:16:17,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:16:17,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775538562] [2023-11-06 22:16:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:16:17,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:16:17,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:16:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:16:17,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:16:17,384 INFO L87 Difference]: Start difference. First operand 10356 states and 15608 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:16:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:16:46,638 INFO L93 Difference]: Finished difference Result 21507 states and 32638 transitions. [2023-11-06 22:16:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:16:46,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2023-11-06 22:16:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:16:46,706 INFO L225 Difference]: With dead ends: 21507 [2023-11-06 22:16:46,706 INFO L226 Difference]: Without dead ends: 11204 [2023-11-06 22:16:46,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:16:46,756 INFO L413 NwaCegarLoop]: 3246 mSDtfsCounter, 10115 mSDsluCounter, 9497 mSDsCounter, 0 mSdLazyCounter, 14468 mSolverCounterSat, 5217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10397 SdHoareTripleChecker+Valid, 12743 SdHoareTripleChecker+Invalid, 19685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5217 IncrementalHoareTripleChecker+Valid, 14468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:16:46,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10397 Valid, 12743 Invalid, 19685 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5217 Valid, 14468 Invalid, 0 Unknown, 0 Unchecked, 27.4s Time] [2023-11-06 22:16:46,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2023-11-06 22:16:47,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 10344. [2023-11-06 22:16:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 7830 states have (on average 1.4300127713920818) internal successors, (11197), 7883 states have internal predecessors, (11197), 2194 states have call successors, (2194), 320 states have call predecessors, (2194), 319 states have return successors, (2188), 2177 states have call predecessors, (2188), 2184 states have call successors, (2188) [2023-11-06 22:16:47,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 15579 transitions. [2023-11-06 22:16:47,965 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 15579 transitions. Word has length 108 [2023-11-06 22:16:47,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:16:47,966 INFO L495 AbstractCegarLoop]: Abstraction has 10344 states and 15579 transitions. [2023-11-06 22:16:47,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:16:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 15579 transitions. [2023-11-06 22:16:47,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:16:47,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:16:47,978 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:16:47,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:16:47,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:16:47,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:16:47,980 INFO L85 PathProgramCache]: Analyzing trace with hash 531154924, now seen corresponding path program 1 times [2023-11-06 22:16:47,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:16:47,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878999591] [2023-11-06 22:16:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:16:47,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:16:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-06 22:16:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:16:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:16:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 22:16:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 22:16:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:16:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:16:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 22:16:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 22:16:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 22:16:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 22:16:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-06 22:16:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:16:48,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 22:16:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat