./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:09:06,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:09:06,977 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:09:06,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:09:06,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:09:07,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:09:07,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:09:07,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:09:07,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:09:07,034 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:09:07,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:09:07,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:09:07,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:09:07,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:09:07,038 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:09:07,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:09:07,039 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:09:07,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:09:07,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:09:07,040 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:09:07,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:09:07,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:09:07,042 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:09:07,042 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:09:07,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:09:07,044 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:09:07,044 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:09:07,045 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:09:07,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:09:07,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:09:07,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:09:07,047 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:09:07,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:09:07,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:09:07,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:09:07,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:09:07,048 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:09:07,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:09:07,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:09:07,049 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_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 045b49e5089f039c3b28eef4cf3a9c907cbda8f22472af0061e42bad883dd2f9 [2023-11-21 22:09:07,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:09:07,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:09:07,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:09:07,430 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:09:07,430 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:09:07,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2023-11-21 22:09:10,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:09:11,280 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:09:11,281 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2023-11-21 22:09:11,328 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/data/4a3281fd1/0a052bfca3474b29928f11327c506702/FLAGd61f4ca6b [2023-11-21 22:09:11,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/data/4a3281fd1/0a052bfca3474b29928f11327c506702 [2023-11-21 22:09:11,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:09:11,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:09:11,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:09:11,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:09:11,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:09:11,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:09:11" (1/1) ... [2023-11-21 22:09:11,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@364af63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:11, skipping insertion in model container [2023-11-21 22:09:11,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:09:11" (1/1) ... [2023-11-21 22:09:11,511 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:09:12,030 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2023-11-21 22:09:12,031 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2023-11-21 22:09:12,396 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_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2023-11-21 22:09:13,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:09:13,485 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:09:13,594 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3528] [2023-11-21 22:09:13,595 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3529-3530] [2023-11-21 22:09:13,598 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [3625] [2023-11-21 22:09:13,600 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0": "+m" (v->counter)); [3632] [2023-11-21 22:09:13,601 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [3640-3641] [2023-11-21 22:09:13,613 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_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i[105797,105810] [2023-11-21 22:09:13,616 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)); [3856-3857] [2023-11-21 22:09:13,617 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)); [3864-3865] [2023-11-21 22:09:13,617 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)); [3872-3873] [2023-11-21 22:09:13,619 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)); [3899-3900] [2023-11-21 22:09:13,619 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)); [3907-3908] [2023-11-21 22:09:13,622 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" (115), "i" (12UL)); [3931-3932] [2023-11-21 22:09:13,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:09:13,945 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:09:13,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13 WrapperNode [2023-11-21 22:09:13,946 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:09:13,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:09:13,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:09:13,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:09:13,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:14,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:14,267 INFO L138 Inliner]: procedures = 189, calls = 1841, calls flagged for inlining = 79, calls inlined = 70, statements flattened = 4898 [2023-11-21 22:09:14,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:09:14,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:09:14,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:09:14,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:09:14,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:14,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:14,339 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:15,132 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure #Ultimate.C_memset is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2023-11-21 22:09:15,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:15,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:15,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:15,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:15,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:15,349 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:15,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:09:15,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:09:15,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:09:15,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:09:15,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (1/1) ... [2023-11-21 22:09:15,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:09:15,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:09:15,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:09:15,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:09:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2023-11-21 22:09:15,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2023-11-21 22:09:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-21 22:09:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-21 22:09:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-21 22:09:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-21 22:09:15,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-21 22:09:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-21 22:09:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-21 22:09:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-21 22:09:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure free_sglist [2023-11-21 22:09:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure free_sglist [2023-11-21 22:09:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2023-11-21 22:09:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2023-11-21 22:09:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure test_iso_queue [2023-11-21 22:09:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure test_iso_queue [2023-11-21 22:09:15,498 INFO L130 BoogieDeclarations]: Found specification of procedure simple_check_buf [2023-11-21 22:09:15,498 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_check_buf [2023-11-21 22:09:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 22:09:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 22:09:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:09:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-11-21 22:09:15,499 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-11-21 22:09:15,499 INFO L130 BoogieDeclarations]: Found specification of procedure perform_sglist [2023-11-21 22:09:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure perform_sglist [2023-11-21 22:09:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure test_unaligned_bulk [2023-11-21 22:09:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure test_unaligned_bulk [2023-11-21 22:09:15,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-21 22:09:15,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-21 22:09:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_sglist [2023-11-21 22:09:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_sglist [2023-11-21 22:09:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-21 22:09:15,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-21 22:09:15,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 22:09:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 22:09:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2023-11-21 22:09:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2023-11-21 22:09:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-21 22:09:15,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-21 22:09:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-21 22:09:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-21 22:09:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 22:09:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 22:09:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure set_altsetting [2023-11-21 22:09:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure set_altsetting [2023-11-21 22:09:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2023-11-21 22:09:15,504 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2023-11-21 22:09:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:09:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-21 22:09:15,504 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-21 22:09:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-21 22:09:15,504 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-21 22:09:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 22:09:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 22:09:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure verify_not_halted [2023-11-21 22:09:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure verify_not_halted [2023-11-21 22:09:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2023-11-21 22:09:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2023-11-21 22:09:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-21 22:09:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-21 22:09:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 22:09:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 22:09:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 22:09:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 22:09:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2023-11-21 22:09:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2023-11-21 22:09:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:09:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:09:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure test_halt [2023-11-21 22:09:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure test_halt [2023-11-21 22:09:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_alloc_urb [2023-11-21 22:09:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_alloc_urb [2023-11-21 22:09:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure unlink1 [2023-11-21 22:09:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink1 [2023-11-21 22:09:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:09:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure ctrl_out [2023-11-21 22:09:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ctrl_out [2023-11-21 22:09:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-21 22:09:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-21 22:09:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2023-11-21 22:09:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2023-11-21 22:09:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_status [2023-11-21 22:09:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_status [2023-11-21 22:09:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:09:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure is_good_config [2023-11-21 22:09:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure is_good_config [2023-11-21 22:09:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-11-21 22:09:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-11-21 22:09:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-11-21 22:09:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-11-21 22:09:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:09:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:09:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2023-11-21 22:09:15,512 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2023-11-21 22:09:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-21 22:09:15,512 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-21 22:09:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2023-11-21 22:09:15,512 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2023-11-21 22:09:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure testdev_to_usbdev [2023-11-21 22:09:15,513 INFO L138 BoogieDeclarations]: Found implementation of procedure testdev_to_usbdev [2023-11-21 22:09:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2023-11-21 22:09:15,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2023-11-21 22:09:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:09:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_simple [2023-11-21 22:09:15,514 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_simple [2023-11-21 22:09:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-21 22:09:15,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-21 22:09:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2023-11-21 22:09:15,514 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2023-11-21 22:09:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-21 22:09:15,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-21 22:09:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-21 22:09:15,515 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-21 22:09:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure simple_io [2023-11-21 22:09:15,515 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_io [2023-11-21 22:09:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:09:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:09:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure simple_alloc_urb [2023-11-21 22:09:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_alloc_urb [2023-11-21 22:09:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure simple_free_urb [2023-11-21 22:09:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_free_urb [2023-11-21 22:09:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-21 22:09:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-21 22:09:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_buf [2023-11-21 22:09:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_buf [2023-11-21 22:09:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2023-11-21 22:09:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2023-11-21 22:09:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-21 22:09:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-21 22:09:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-21 22:09:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-21 22:09:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_ioctl [2023-11-21 22:09:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_ioctl [2023-11-21 22:09:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_offset [2023-11-21 22:09:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_offset [2023-11-21 22:09:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-21 22:09:15,519 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-21 22:09:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-21 22:09:15,519 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-21 22:09:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:09:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2023-11-21 22:09:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2023-11-21 22:09:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure usbtest_disconnect [2023-11-21 22:09:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtest_disconnect [2023-11-21 22:09:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure check_guard_bytes [2023-11-21 22:09:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure check_guard_bytes [2023-11-21 22:09:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-21 22:09:15,521 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-21 22:09:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-21 22:09:15,521 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-21 22:09:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-21 22:09:15,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-21 22:09:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:09:15,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:09:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_descriptor [2023-11-21 22:09:15,522 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_descriptor [2023-11-21 22:09:16,142 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:09:16,147 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:09:16,896 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 22:09:20,607 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:09:22,969 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:09:22,969 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:09:22,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:09:22 BoogieIcfgContainer [2023-11-21 22:09:22,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:09:22,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:09:22,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:09:22,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:09:22,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:09:11" (1/3) ... [2023-11-21 22:09:22,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd938b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:09:22, skipping insertion in model container [2023-11-21 22:09:22,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:09:13" (2/3) ... [2023-11-21 22:09:22,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd938b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:09:22, skipping insertion in model container [2023-11-21 22:09:22,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:09:22" (3/3) ... [2023-11-21 22:09:22,986 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--misc--usbtest.ko-entry_point.cil.out.i [2023-11-21 22:09:23,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:09:23,010 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:09:23,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:09:23,134 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b882bf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:09:23,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:09:23,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 1213 states, 794 states have (on average 1.3916876574307304) internal successors, (1105), 809 states have internal predecessors, (1105), 346 states have call successors, (346), 72 states have call predecessors, (346), 71 states have return successors, (343), 340 states have call predecessors, (343), 343 states have call successors, (343) [2023-11-21 22:09:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-21 22:09:23,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:09:23,167 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] [2023-11-21 22:09:23,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:09:23,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1817586141, now seen corresponding path program 1 times [2023-11-21 22:09:23,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:23,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530567249] [2023-11-21 22:09:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:23,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:23,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:09:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:09:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:09:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:09:24,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:24,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530567249] [2023-11-21 22:09:24,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530567249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:24,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:24,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:09:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351256235] [2023-11-21 22:09:24,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:24,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:09:24,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:09:24,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:09:24,092 INFO L87 Difference]: Start difference. First operand has 1213 states, 794 states have (on average 1.3916876574307304) internal successors, (1105), 809 states have internal predecessors, (1105), 346 states have call successors, (346), 72 states have call predecessors, (346), 71 states have return successors, (343), 340 states have call predecessors, (343), 343 states have call successors, (343) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 22:09:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:09:30,896 INFO L93 Difference]: Finished difference Result 2754 states and 4234 transitions. [2023-11-21 22:09:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:09:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-11-21 22:09:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:09:30,935 INFO L225 Difference]: With dead ends: 2754 [2023-11-21 22:09:30,935 INFO L226 Difference]: Without dead ends: 1523 [2023-11-21 22:09:30,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:09:30,956 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 1033 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 985 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 985 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:09:30,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 3112 Invalid, 3738 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [985 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-21 22:09:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2023-11-21 22:09:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1228. [2023-11-21 22:09:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 808 states have (on average 1.381188118811881) internal successors, (1116), 819 states have internal predecessors, (1116), 345 states have call successors, (345), 75 states have call predecessors, (345), 74 states have return successors, (344), 340 states have call predecessors, (344), 344 states have call successors, (344) [2023-11-21 22:09:31,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1805 transitions. [2023-11-21 22:09:31,153 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1805 transitions. Word has length 35 [2023-11-21 22:09:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:09:31,154 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1805 transitions. [2023-11-21 22:09:31,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 22:09:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1805 transitions. [2023-11-21 22:09:31,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-21 22:09:31,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:09:31,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:31,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:09:31,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:09:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash 902467678, now seen corresponding path program 1 times [2023-11-21 22:09:31,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:31,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934908291] [2023-11-21 22:09:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:31,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:09:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:09:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:09:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:09:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:31,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:09:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:09:31,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:31,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934908291] [2023-11-21 22:09:31,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934908291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:31,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:31,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:09:31,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709907782] [2023-11-21 22:09:31,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:31,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:09:31,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:31,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:09:31,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:09:31,887 INFO L87 Difference]: Start difference. First operand 1228 states and 1805 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-21 22:09:38,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:09:38,612 INFO L93 Difference]: Finished difference Result 1554 states and 2352 transitions. [2023-11-21 22:09:38,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:09:38,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2023-11-21 22:09:38,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:09:38,626 INFO L225 Difference]: With dead ends: 1554 [2023-11-21 22:09:38,627 INFO L226 Difference]: Without dead ends: 1551 [2023-11-21 22:09:38,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:09:38,629 INFO L413 NwaCegarLoop]: 1122 mSDtfsCounter, 2484 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 1587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 4375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1587 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:09:38,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2648 Valid, 3047 Invalid, 4375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1587 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-21 22:09:38,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2023-11-21 22:09:38,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1255. [2023-11-21 22:09:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 823 states have (on average 1.3754556500607533) internal successors, (1132), 834 states have internal predecessors, (1132), 349 states have call successors, (349), 83 states have call predecessors, (349), 82 states have return successors, (348), 344 states have call predecessors, (348), 348 states have call successors, (348) [2023-11-21 22:09:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1829 transitions. [2023-11-21 22:09:38,748 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1829 transitions. Word has length 51 [2023-11-21 22:09:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:09:38,749 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1829 transitions. [2023-11-21 22:09:38,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-21 22:09:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1829 transitions. [2023-11-21 22:09:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-21 22:09:38,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:09:38,768 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:38,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:09:38,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:09:38,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:38,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1055036723, now seen corresponding path program 1 times [2023-11-21 22:09:38,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:38,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202388036] [2023-11-21 22:09:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:38,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:38,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202388036] [2023-11-21 22:09:38,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-21 22:09:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828432143] [2023-11-21 22:09:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:38,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:09:38,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:09:38,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:09:39,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:09:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:39,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 2428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:09:39,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:09:39,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:39,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828432143] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:39,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:39,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:09:39,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770592098] [2023-11-21 22:09:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:39,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:39,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:39,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:39,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:39,905 INFO L87 Difference]: Start difference. First operand 1255 states and 1829 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-21 22:09:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:09:40,937 INFO L93 Difference]: Finished difference Result 2568 states and 3725 transitions. [2023-11-21 22:09:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:40,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 135 [2023-11-21 22:09:40,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:09:40,952 INFO L225 Difference]: With dead ends: 2568 [2023-11-21 22:09:40,952 INFO L226 Difference]: Without dead ends: 1331 [2023-11-21 22:09:41,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:09:41,019 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 220 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:09:41,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2987 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:09:41,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-11-21 22:09:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1325. [2023-11-21 22:09:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 873 states have (on average 1.3711340206185567) internal successors, (1197), 884 states have internal predecessors, (1197), 355 states have call successors, (355), 97 states have call predecessors, (355), 96 states have return successors, (354), 350 states have call predecessors, (354), 354 states have call successors, (354) [2023-11-21 22:09:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1906 transitions. [2023-11-21 22:09:41,146 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1906 transitions. Word has length 135 [2023-11-21 22:09:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:09:41,149 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 1906 transitions. [2023-11-21 22:09:41,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-21 22:09:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1906 transitions. [2023-11-21 22:09:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-21 22:09:41,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:09:41,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:41,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:09:41,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:09:41,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:09:41,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:41,390 INFO L85 PathProgramCache]: Analyzing trace with hash 290815845, now seen corresponding path program 1 times [2023-11-21 22:09:41,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:41,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874188502] [2023-11-21 22:09:41,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:41,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:41,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:09:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554845315] [2023-11-21 22:09:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:41,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:09:41,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:09:41,576 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:09:41,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:09:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:42,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:09:42,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:09:42,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:42,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874188502] [2023-11-21 22:09:42,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:09:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554845315] [2023-11-21 22:09:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554845315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:42,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:42,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:09:42,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767753861] [2023-11-21 22:09:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:42,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:09:42,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:09:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:09:42,649 INFO L87 Difference]: Start difference. First operand 1325 states and 1906 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-21 22:09:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:09:43,830 INFO L93 Difference]: Finished difference Result 2702 states and 3898 transitions. [2023-11-21 22:09:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:09:43,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 148 [2023-11-21 22:09:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:09:43,845 INFO L225 Difference]: With dead ends: 2702 [2023-11-21 22:09:43,845 INFO L226 Difference]: Without dead ends: 1395 [2023-11-21 22:09:43,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:09:43,855 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 237 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:09:43,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 3173 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:09:43,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2023-11-21 22:09:43,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1326. [2023-11-21 22:09:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 874 states have (on average 1.368421052631579) internal successors, (1196), 885 states have internal predecessors, (1196), 355 states have call successors, (355), 97 states have call predecessors, (355), 96 states have return successors, (354), 350 states have call predecessors, (354), 354 states have call successors, (354) [2023-11-21 22:09:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1905 transitions. [2023-11-21 22:09:43,957 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1905 transitions. Word has length 148 [2023-11-21 22:09:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:09:43,958 INFO L495 AbstractCegarLoop]: Abstraction has 1326 states and 1905 transitions. [2023-11-21 22:09:43,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-21 22:09:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1905 transitions. [2023-11-21 22:09:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-21 22:09:43,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:09:43,969 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:44,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:09:44,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:09:44,188 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:09:44,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1219208779, now seen corresponding path program 1 times [2023-11-21 22:09:44,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:44,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914943860] [2023-11-21 22:09:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:44,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:44,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:09:44,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639773102] [2023-11-21 22:09:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:44,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:09:44,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:09:44,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:09:44,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:09:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:45,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:09:45,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:09:45,278 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:45,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:45,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914943860] [2023-11-21 22:09:45,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:09:45,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639773102] [2023-11-21 22:09:45,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639773102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:45,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:45,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:09:45,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775448102] [2023-11-21 22:09:45,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:45,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:09:45,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:45,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:09:45,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:09:45,282 INFO L87 Difference]: Start difference. First operand 1326 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-21 22:09:46,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:09:46,849 INFO L93 Difference]: Finished difference Result 2730 states and 3932 transitions. [2023-11-21 22:09:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:09:46,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 158 [2023-11-21 22:09:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:09:46,864 INFO L225 Difference]: With dead ends: 2730 [2023-11-21 22:09:46,864 INFO L226 Difference]: Without dead ends: 1422 [2023-11-21 22:09:46,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:09:46,872 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 226 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 4567 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:09:46,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 4567 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-21 22:09:46,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2023-11-21 22:09:46,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1326. [2023-11-21 22:09:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 874 states have (on average 1.368421052631579) internal successors, (1196), 885 states have internal predecessors, (1196), 355 states have call successors, (355), 97 states have call predecessors, (355), 96 states have return successors, (354), 350 states have call predecessors, (354), 354 states have call successors, (354) [2023-11-21 22:09:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1905 transitions. [2023-11-21 22:09:46,969 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1905 transitions. Word has length 158 [2023-11-21 22:09:46,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:09:46,970 INFO L495 AbstractCegarLoop]: Abstraction has 1326 states and 1905 transitions. [2023-11-21 22:09:46,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-21 22:09:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1905 transitions. [2023-11-21 22:09:46,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-11-21 22:09:46,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:09:46,981 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:47,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:09:47,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:09:47,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:09:47,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1194847219, now seen corresponding path program 1 times [2023-11-21 22:09:47,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:47,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782720378] [2023-11-21 22:09:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:47,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:47,347 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:09:47,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268618078] [2023-11-21 22:09:47,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:47,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:09:47,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:09:47,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:09:47,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:09:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:48,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 2785 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:09:48,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:09:48,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:09:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-21 22:09:48,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:48,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782720378] [2023-11-21 22:09:48,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:09:48,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268618078] [2023-11-21 22:09:48,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268618078] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:09:48,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:09:48,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-21 22:09:48,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923759203] [2023-11-21 22:09:48,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:48,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:09:48,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:48,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:09:48,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:09:48,669 INFO L87 Difference]: Start difference. First operand 1326 states and 1905 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-21 22:09:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:09:49,852 INFO L93 Difference]: Finished difference Result 3780 states and 5458 transitions. [2023-11-21 22:09:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:09:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 196 [2023-11-21 22:09:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:09:49,873 INFO L225 Difference]: With dead ends: 3780 [2023-11-21 22:09:49,874 INFO L226 Difference]: Without dead ends: 2472 [2023-11-21 22:09:49,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:09:49,882 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 1719 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:09:49,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 3126 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:09:49,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2023-11-21 22:09:50,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2438. [2023-11-21 22:09:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 1597 states have (on average 1.371947401377583) internal successors, (2191), 1619 states have internal predecessors, (2191), 668 states have call successors, (668), 173 states have call predecessors, (668), 172 states have return successors, (667), 659 states have call predecessors, (667), 667 states have call successors, (667) [2023-11-21 22:09:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3526 transitions. [2023-11-21 22:09:50,059 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3526 transitions. Word has length 196 [2023-11-21 22:09:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:09:50,061 INFO L495 AbstractCegarLoop]: Abstraction has 2438 states and 3526 transitions. [2023-11-21 22:09:50,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2023-11-21 22:09:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3526 transitions. [2023-11-21 22:09:50,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-21 22:09:50,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:09:50,077 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:50,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:09:50,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:09:50,304 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:09:50,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash 307684707, now seen corresponding path program 1 times [2023-11-21 22:09:50,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:50,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558578804] [2023-11-21 22:09:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:50,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:50,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 22:09:50,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086284541] [2023-11-21 22:09:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:50,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:09:50,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:09:50,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:09:50,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19bfc6bd-0f7f-4aa6-b539-7ffa379a03ae/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:09:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:51,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:09:51,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:09:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-21 22:09:51,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:09:51,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558578804] [2023-11-21 22:09:51,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 22:09:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086284541] [2023-11-21 22:09:51,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086284541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:51,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:51,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:09:51,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294554661] [2023-11-21 22:09:51,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:51,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:09:51,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:51,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:09:51,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:09:51,611 INFO L87 Difference]: Start difference. First operand 2438 states and 3526 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28)