./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu --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 bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:50,925 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:51,052 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 08:05:51,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:51,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:51,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:51,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:51,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:51,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:51,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:51,117 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:51,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:51,118 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:51,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:51,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:51,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:51,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:51,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:51,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:51,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:51,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:51,124 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:51,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:51,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:51,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:51,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:51,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:51,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:51,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:51,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:51,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:51,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:51,130 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:51,130 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:51,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:51,131 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:51,131 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_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdcb32e90fffda272ef4414cda96d9fa59a53e22555da4af86a588968a9c4dd7 [2023-11-19 08:05:51,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:51,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:51,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:51,462 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:51,463 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:51,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2023-11-19 08:05:54,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:55,444 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:55,444 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2023-11-19 08:05:55,520 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/data/e856921d5/3544577871214160b22075607975606f/FLAG03f9a7943 [2023-11-19 08:05:55,539 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/data/e856921d5/3544577871214160b22075607975606f [2023-11-19 08:05:55,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:55,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:55,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:55,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:55,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:55,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:55" (1/1) ... [2023-11-19 08:05:55,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb4c5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:55, skipping insertion in model container [2023-11-19 08:05:55,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:55" (1/1) ... [2023-11-19 08:05:55,821 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:58,970 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_04501380-2255-4cc1-859a-9f042620b016/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2023-11-19 08:05:59,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:59,117 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:59,250 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [5920] [2023-11-19 08:05:59,252 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [5927] [2023-11-19 08:05:59,253 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [5935-5936] [2023-11-19 08:05:59,267 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)); [6070] [2023-11-19 08:05:59,267 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)); [6077] [2023-11-19 08:05:59,270 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %1,%0": "=r" (ret): "m" (*((unsigned int volatile *)addr)): "memory"); [6180] [2023-11-19 08:05:59,271 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("movl %0,%1": : "r" (val), "m" (*((unsigned int volatile *)addr)): "memory"); [6187] [2023-11-19 08:05:59,289 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/asm-generic/dma-mapping-common.h"), "i" (19), "i" (12UL)); [6416-6417] [2023-11-19 08:05:59,291 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/asm-generic/dma-mapping-common.h"), "i" (36), "i" (12UL)); [6445-6446] [2023-11-19 08:05:59,293 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/asm-generic/dma-mapping-common.h"), "i" (84), "i" (12UL)); [6479-6480] [2023-11-19 08:05:59,295 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/asm-generic/dma-mapping-common.h"), "i" (96), "i" (12UL)); [6503-6504] [2023-11-19 08:05:59,310 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/netdevice.h"), "i" (507), "i" (12UL)); [6839-6840] [2023-11-19 08:05:59,311 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [6845] [2023-11-19 08:05:59,532 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8805] [2023-11-19 08:05:59,535 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [8861] [2023-11-19 08:05:59,543 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)skb->data) [8969] [2023-11-19 08:05:59,545 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)skb2->data) [9016] [2023-11-19 08:05:59,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("lfence": : : "memory"); [9060] [2023-11-19 08:05:59,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9406] [2023-11-19 08:05:59,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9412] [2023-11-19 08:05:59,579 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("sfence": : : "memory"); [9430] [2023-11-19 08:05:59,697 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_04501380-2255-4cc1-859a-9f042620b016/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i[355549,355562] [2023-11-19 08:05:59,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:00,074 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:00,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00 WrapperNode [2023-11-19 08:06:00,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:00,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:00,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:00,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:00,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,492 INFO L138 Inliner]: procedures = 409, calls = 2719, calls flagged for inlining = 209, calls inlined = 190, statements flattened = 6957 [2023-11-19 08:06:00,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:00,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:00,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:00,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:00,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,939 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:00,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:00,942 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:00,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:00,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (1/1) ... [2023-11-19 08:06:00,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:00,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:01,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:01,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_link_speed [2023-11-19 08:06:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_link_speed [2023-11-19 08:06:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2023-11-19 08:06:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2023-11-19 08:06:01,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-19 08:06:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-19 08:06:01,060 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2023-11-19 08:06:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2023-11-19 08:06:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_state_machine_work [2023-11-19 08:06:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_state_machine_work [2023-11-19 08:06:01,118 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2023-11-19 08:06:01,118 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2023-11-19 08:06:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-19 08:06:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-19 08:06:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 08:06:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 08:06:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2023-11-19 08:06:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2023-11-19 08:06:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-19 08:06:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-19 08:06:01,119 INFO L130 BoogieDeclarations]: Found specification of procedure ql_this_adapter_controls_port [2023-11-19 08:06:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_this_adapter_controls_port [2023-11-19 08:06:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2023-11-19 08:06:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2023-11-19 08:06:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_interrupts [2023-11-19 08:06:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_interrupts [2023-11-19 08:06:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2023-11-19 08:06:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2023-11-19 08:06:01,120 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-11-19 08:06:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-11-19 08:06:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg_l [2023-11-19 08:06:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg_l [2023-11-19 08:06:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_send_free_list [2023-11-19 08:06:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_send_free_list [2023-11-19 08:06:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-19 08:06:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-19 08:06:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2023-11-19 08:06:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2023-11-19 08:06:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 08:06:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 08:06:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2023-11-19 08:06:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2023-11-19 08:06:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_set_mac_address [2023-11-19 08:06:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_set_mac_address [2023-11-19 08:06:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cycle_adapter [2023-11-19 08:06:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cycle_adapter [2023-11-19 08:06:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mac_cfg_soft_reset [2023-11-19 08:06:01,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mac_cfg_soft_reset [2023-11-19 08:06:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-11-19 08:06:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-11-19 08:06:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-19 08:06:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-19 08:06:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2023-11-19 08:06:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2023-11-19 08:06:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_disable_scan_mode [2023-11-19 08:06:01,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_disable_scan_mode [2023-11-19 08:06:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 08:06:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 08:06:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2023-11-19 08:06:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2023-11-19 08:06:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:06:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2023-11-19 08:06:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2023-11-19 08:06:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg_l [2023-11-19 08:06:01,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg_l [2023-11-19 08:06:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2023-11-19 08:06:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2023-11-19 08:06:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2023-11-19 08:06:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2023-11-19 08:06:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2023-11-19 08:06:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2023-11-19 08:06:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_info [2023-11-19 08:06:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_info [2023-11-19 08:06:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2023-11-19 08:06:01,125 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2023-11-19 08:06:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 08:06:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-19 08:06:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-19 08:06:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 08:06:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 08:06:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 08:06:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_5 [2023-11-19 08:06:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_5 [2023-11-19 08:06:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page1_reg [2023-11-19 08:06:01,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page1_reg [2023-11-19 08:06:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:06:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2023-11-19 08:06:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2023-11-19 08:06:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 08:06:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 08:06:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-19 08:06:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-19 08:06:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2023-11-19 08:06:01,127 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2023-11-19 08:06:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2023-11-19 08:06:01,128 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2023-11-19 08:06:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_register_page [2023-11-19 08:06:01,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_register_page [2023-11-19 08:06:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2023-11-19 08:06:01,132 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2023-11-19 08:06:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg_ex [2023-11-19 08:06:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg_ex [2023-11-19 08:06:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure ql_phy_init_ex [2023-11-19 08:06:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_phy_init_ex [2023-11-19 08:06:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-19 08:06:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-19 08:06:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg_l [2023-11-19 08:06:01,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg_l [2023-11-19 08:06:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_common_reg [2023-11-19 08:06:01,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_common_reg [2023-11-19 08:06:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:06:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2023-11-19 08:06:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2023-11-19 08:06:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page2_reg [2023-11-19 08:06:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page2_reg [2023-11-19 08:06:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_5 [2023-11-19 08:06:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_5 [2023-11-19 08:06:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_common_reg [2023-11-19 08:06:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_common_reg [2023-11-19 08:06:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-19 08:06:01,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-19 08:06:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:06:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_read_reg [2023-11-19 08:06:01,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_read_reg [2023-11-19 08:06:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2023-11-19 08:06:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2023-11-19 08:06:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_printk [2023-11-19 08:06:01,140 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_printk [2023-11-19 08:06:01,141 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2023-11-19 08:06:01,142 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2023-11-19 08:06:01,142 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_nvram_reg [2023-11-19 08:06:01,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_nvram_reg [2023-11-19 08:06:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-19 08:06:01,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-19 08:06:01,146 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2023-11-19 08:06:01,147 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2023-11-19 08:06:01,147 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_drvr_lock [2023-11-19 08:06:01,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_drvr_lock [2023-11-19 08:06:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2023-11-19 08:06:01,148 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2023-11-19 08:06:01,149 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_enable_scan_mode [2023-11-19 08:06:01,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_enable_scan_mode [2023-11-19 08:06:01,149 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2023-11-19 08:06:01,154 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2023-11-19 08:06:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_timeout_work [2023-11-19 08:06:01,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_timeout_work [2023-11-19 08:06:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2023-11-19 08:06:01,154 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2023-11-19 08:06:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-11-19 08:06:01,155 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-11-19 08:06:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:01,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_for_mii_ready [2023-11-19 08:06:01,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_for_mii_ready [2023-11-19 08:06:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-19 08:06:01,155 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-19 08:06:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_large_buffers [2023-11-19 08:06:01,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_large_buffers [2023-11-19 08:06:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 08:06:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 08:06:01,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 08:06:01,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 08:06:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-19 08:06:01,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2023-11-19 08:06:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2023-11-19 08:06:01,157 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2023-11-19 08:06:01,157 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2023-11-19 08:06:01,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2023-11-19 08:06:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2023-11-19 08:06:01,158 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2023-11-19 08:06:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2023-11-19 08:06:01,158 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2023-11-19 08:06:01,158 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_page0_reg [2023-11-19 08:06:01,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_page0_reg [2023-11-19 08:06:01,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 08:06:01,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 08:06:01,160 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2023-11-19 08:06:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2023-11-19 08:06:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2023-11-19 08:06:01,161 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2023-11-19 08:06:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure PHY_Setup [2023-11-19 08:06:01,161 INFO L138 BoogieDeclarations]: Found implementation of procedure PHY_Setup [2023-11-19 08:06:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 08:06:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 08:06:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_buffer_queues [2023-11-19 08:06:01,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_buffer_queues [2023-11-19 08:06:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:06:01,163 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:06:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2023-11-19 08:06:01,163 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2023-11-19 08:06:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2023-11-19 08:06:01,164 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2023-11-19 08:06:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2023-11-19 08:06:01,164 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2023-11-19 08:06:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2023-11-19 08:06:01,164 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2023-11-19 08:06:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:06:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 08:06:01,165 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 08:06:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:06:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-19 08:06:01,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-19 08:06:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_3 [2023-11-19 08:06:01,165 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_3 [2023-11-19 08:06:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 08:06:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2023-11-19 08:06:01,166 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2023-11-19 08:06:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 08:06:01,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 08:06:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2023-11-19 08:06:01,166 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2023-11-19 08:06:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2023-11-19 08:06:01,167 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2023-11-19 08:06:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-19 08:06:01,167 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-19 08:06:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-19 08:06:01,167 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-19 08:06:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_page0_reg [2023-11-19 08:06:01,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_page0_reg [2023-11-19 08:06:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2023-11-19 08:06:01,168 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2023-11-19 08:06:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_link_full_dup [2023-11-19 08:06:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_link_full_dup [2023-11-19 08:06:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure ql_reset_work [2023-11-19 08:06:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_reset_work [2023-11-19 08:06:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2023-11-19 08:06:01,169 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2023-11-19 08:06:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure ql3xxx_tx_timeout [2023-11-19 08:06:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ql3xxx_tx_timeout [2023-11-19 08:06:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure ql_supported_modes [2023-11-19 08:06:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_supported_modes [2023-11-19 08:06:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2023-11-19 08:06:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2023-11-19 08:06:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-11-19 08:06:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-11-19 08:06:01,171 INFO L130 BoogieDeclarations]: Found specification of procedure ql_is_fiber [2023-11-19 08:06:01,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_is_fiber [2023-11-19 08:06:01,171 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2023-11-19 08:06:01,171 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2023-11-19 08:06:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 08:06:01,172 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 08:06:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_net_req_rsp_queues [2023-11-19 08:06:01,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_net_req_rsp_queues [2023-11-19 08:06:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:06:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2023-11-19 08:06:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2023-11-19 08:06:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 08:06:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 08:06:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg_ex [2023-11-19 08:06:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg_ex [2023-11-19 08:06:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2023-11-19 08:06:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2023-11-19 08:06:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2023-11-19 08:06:01,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2023-11-19 08:06:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure ql_port_start [2023-11-19 08:06:01,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_port_start [2023-11-19 08:06:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2023-11-19 08:06:01,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2023-11-19 08:06:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2023-11-19 08:06:01,175 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2023-11-19 08:06:01,176 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_auto_cfg_status [2023-11-19 08:06:01,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_auto_cfg_status [2023-11-19 08:06:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mii_write_reg [2023-11-19 08:06:01,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mii_write_reg [2023-11-19 08:06:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_3 [2023-11-19 08:06:01,180 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_3 [2023-11-19 08:06:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-19 08:06:01,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2023-11-19 08:06:01,180 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2023-11-19 08:06:01,181 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2023-11-19 08:06:01,183 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2023-11-19 08:06:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2023-11-19 08:06:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2023-11-19 08:06:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2023-11-19 08:06:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2023-11-19 08:06:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2023-11-19 08:06:01,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2023-11-19 08:06:02,100 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:02,105 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:02,517 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 08:06:08,402 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:08,426 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:08,426 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:06:08,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:08 BoogieIcfgContainer [2023-11-19 08:06:08,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:08,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:08,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:08,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:08,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:55" (1/3) ... [2023-11-19 08:06:08,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c3be6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:08, skipping insertion in model container [2023-11-19 08:06:08,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:00" (2/3) ... [2023-11-19 08:06:08,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c3be6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:08, skipping insertion in model container [2023-11-19 08:06:08,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:08" (3/3) ... [2023-11-19 08:06:08,454 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--qlogic--qla3xxx.ko-entry_point.cil.out.i [2023-11-19 08:06:08,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:08,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:06:08,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:08,614 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;@527f23b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:08,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:06:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 2817 states, 1963 states have (on average 1.3861436576668364) internal successors, (2721), 2019 states have internal predecessors, (2721), 722 states have call successors, (722), 131 states have call predecessors, (722), 130 states have return successors, (712), 699 states have call predecessors, (712), 712 states have call successors, (712) [2023-11-19 08:06:08,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-19 08:06:08,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:08,698 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:08,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:08,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:08,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1831353109, now seen corresponding path program 1 times [2023-11-19 08:06:08,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:08,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095048947] [2023-11-19 08:06:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:08,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:09,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095048947] [2023-11-19 08:06:09,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:06:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116286623] [2023-11-19 08:06:09,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:09,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:09,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:06:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:11,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 3460 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:06:11,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-19 08:06:11,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:11,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116286623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:11,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:11,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:11,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128692461] [2023-11-19 08:06:11,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:11,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:11,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:11,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:11,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:11,140 INFO L87 Difference]: Start difference. First operand has 2817 states, 1963 states have (on average 1.3861436576668364) internal successors, (2721), 2019 states have internal predecessors, (2721), 722 states have call successors, (722), 131 states have call predecessors, (722), 130 states have return successors, (712), 699 states have call predecessors, (712), 712 states have call successors, (712) Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 08:06:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:11,437 INFO L93 Difference]: Finished difference Result 5629 states and 8549 transitions. [2023-11-19 08:06:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 216 [2023-11-19 08:06:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:11,478 INFO L225 Difference]: With dead ends: 5629 [2023-11-19 08:06:11,478 INFO L226 Difference]: Without dead ends: 2791 [2023-11-19 08:06:11,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:11,509 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:11,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:11,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2023-11-19 08:06:11,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2791. [2023-11-19 08:06:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 1949 states have (on average 1.3565931246793228) internal successors, (2644), 1993 states have internal predecessors, (2644), 712 states have call successors, (712), 130 states have call predecessors, (712), 129 states have return successors, (711), 698 states have call predecessors, (711), 711 states have call successors, (711) [2023-11-19 08:06:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 4067 transitions. [2023-11-19 08:06:11,769 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 4067 transitions. Word has length 216 [2023-11-19 08:06:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:11,769 INFO L495 AbstractCegarLoop]: Abstraction has 2791 states and 4067 transitions. [2023-11-19 08:06:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-19 08:06:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 4067 transitions. [2023-11-19 08:06:11,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-19 08:06:11,788 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:11,789 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:11,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:12,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:12,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:12,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:12,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1460596471, now seen corresponding path program 1 times [2023-11-19 08:06:12,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:12,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036490622] [2023-11-19 08:06:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:12,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:12,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:12,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106670897] [2023-11-19 08:06:12,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:12,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:12,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:12,276 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:12,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:06:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:13,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 3460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:06:13,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-19 08:06:13,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:13,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:13,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036490622] [2023-11-19 08:06:13,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106670897] [2023-11-19 08:06:13,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106670897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:13,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:13,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:13,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792114047] [2023-11-19 08:06:13,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:13,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:13,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:13,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:13,838 INFO L87 Difference]: Start difference. First operand 2791 states and 4067 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 08:06:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:13,992 INFO L93 Difference]: Finished difference Result 2795 states and 4071 transitions. [2023-11-19 08:06:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:13,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 216 [2023-11-19 08:06:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:14,021 INFO L225 Difference]: With dead ends: 2795 [2023-11-19 08:06:14,021 INFO L226 Difference]: Without dead ends: 2792 [2023-11-19 08:06:14,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:14,026 INFO L413 NwaCegarLoop]: 4066 mSDtfsCounter, 0 mSDsluCounter, 4061 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8127 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:14,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8127 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:14,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-11-19 08:06:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2792. [2023-11-19 08:06:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 1950 states have (on average 1.3564102564102565) internal successors, (2645), 1994 states have internal predecessors, (2645), 712 states have call successors, (712), 130 states have call predecessors, (712), 129 states have return successors, (711), 698 states have call predecessors, (711), 711 states have call successors, (711) [2023-11-19 08:06:14,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4068 transitions. [2023-11-19 08:06:14,178 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4068 transitions. Word has length 216 [2023-11-19 08:06:14,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:14,181 INFO L495 AbstractCegarLoop]: Abstraction has 2792 states and 4068 transitions. [2023-11-19 08:06:14,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 08:06:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4068 transitions. [2023-11-19 08:06:14,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-19 08:06:14,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:14,195 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:14,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:14,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:14,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:14,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1397920772, now seen corresponding path program 1 times [2023-11-19 08:06:14,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:14,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758881982] [2023-11-19 08:06:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:14,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:14,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:14,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481115596] [2023-11-19 08:06:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:14,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:14,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:14,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:14,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:06:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:15,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 3465 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:06:15,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:16,003 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-19 08:06:16,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:16,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:16,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758881982] [2023-11-19 08:06:16,004 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:16,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481115596] [2023-11-19 08:06:16,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481115596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:16,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:16,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:16,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583072303] [2023-11-19 08:06:16,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:16,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:16,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:16,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:16,007 INFO L87 Difference]: Start difference. First operand 2792 states and 4068 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 08:06:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:16,437 INFO L93 Difference]: Finished difference Result 7952 states and 11604 transitions. [2023-11-19 08:06:16,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:16,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 218 [2023-11-19 08:06:16,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:16,487 INFO L225 Difference]: With dead ends: 7952 [2023-11-19 08:06:16,488 INFO L226 Difference]: Without dead ends: 5187 [2023-11-19 08:06:16,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:16,508 INFO L413 NwaCegarLoop]: 4049 mSDtfsCounter, 3593 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3593 SdHoareTripleChecker+Valid, 7939 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:16,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3593 Valid, 7939 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:06:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5187 states. [2023-11-19 08:06:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5187 to 5164. [2023-11-19 08:06:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5164 states, 3616 states have (on average 1.3586836283185841) internal successors, (4913), 3702 states have internal predecessors, (4913), 1306 states have call successors, (1306), 242 states have call predecessors, (1306), 241 states have return successors, (1305), 1276 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-11-19 08:06:16,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5164 states to 5164 states and 7524 transitions. [2023-11-19 08:06:16,781 INFO L78 Accepts]: Start accepts. Automaton has 5164 states and 7524 transitions. Word has length 218 [2023-11-19 08:06:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:16,782 INFO L495 AbstractCegarLoop]: Abstraction has 5164 states and 7524 transitions. [2023-11-19 08:06:16,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 08:06:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5164 states and 7524 transitions. [2023-11-19 08:06:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2023-11-19 08:06:16,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:16,808 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:16,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:17,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:17,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:17,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash -25407490, now seen corresponding path program 1 times [2023-11-19 08:06:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:17,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486317093] [2023-11-19 08:06:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:17,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:17,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:17,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486317093] [2023-11-19 08:06:17,455 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:06:17,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107676660] [2023-11-19 08:06:17,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:17,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:17,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:17,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:17,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:06:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 4637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:06:19,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-19 08:06:19,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:19,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107676660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:19,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:19,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:19,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126773536] [2023-11-19 08:06:19,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:19,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:19,131 INFO L87 Difference]: Start difference. First operand 5164 states and 7524 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-19 08:06:19,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:19,421 INFO L93 Difference]: Finished difference Result 10331 states and 15065 transitions. [2023-11-19 08:06:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:19,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 435 [2023-11-19 08:06:19,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:19,469 INFO L225 Difference]: With dead ends: 10331 [2023-11-19 08:06:19,469 INFO L226 Difference]: Without dead ends: 5194 [2023-11-19 08:06:19,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:19,502 INFO L413 NwaCegarLoop]: 4064 mSDtfsCounter, 12 mSDsluCounter, 4061 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8125 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:19,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8125 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2023-11-19 08:06:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 5166. [2023-11-19 08:06:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 3618 states have (on average 1.3584853510226644) internal successors, (4915), 3704 states have internal predecessors, (4915), 1306 states have call successors, (1306), 242 states have call predecessors, (1306), 241 states have return successors, (1305), 1276 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-11-19 08:06:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 7526 transitions. [2023-11-19 08:06:19,746 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 7526 transitions. Word has length 435 [2023-11-19 08:06:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:19,747 INFO L495 AbstractCegarLoop]: Abstraction has 5166 states and 7526 transitions. [2023-11-19 08:06:19,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-19 08:06:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 7526 transitions. [2023-11-19 08:06:19,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-11-19 08:06:19,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:19,770 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:19,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:19,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:19,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:19,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash 881879975, now seen corresponding path program 1 times [2023-11-19 08:06:19,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:19,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306909854] [2023-11-19 08:06:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:19,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:20,216 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:20,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756484517] [2023-11-19 08:06:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:20,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:20,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:20,221 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:20,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:06:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:21,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 4307 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:06:21,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-11-19 08:06:21,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:21,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306909854] [2023-11-19 08:06:21,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:21,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756484517] [2023-11-19 08:06:21,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756484517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:21,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:21,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:21,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828622593] [2023-11-19 08:06:21,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:21,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:21,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:21,828 INFO L87 Difference]: Start difference. First operand 5166 states and 7526 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-19 08:06:22,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:22,120 INFO L93 Difference]: Finished difference Result 10313 states and 15070 transitions. [2023-11-19 08:06:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:22,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 356 [2023-11-19 08:06:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:22,167 INFO L225 Difference]: With dead ends: 10313 [2023-11-19 08:06:22,168 INFO L226 Difference]: Without dead ends: 5174 [2023-11-19 08:06:22,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:22,197 INFO L413 NwaCegarLoop]: 4065 mSDtfsCounter, 2 mSDsluCounter, 4063 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8128 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:22,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8128 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5174 states. [2023-11-19 08:06:22,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5174 to 5168. [2023-11-19 08:06:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5168 states, 3620 states have (on average 1.3582872928176795) internal successors, (4917), 3706 states have internal predecessors, (4917), 1306 states have call successors, (1306), 242 states have call predecessors, (1306), 241 states have return successors, (1305), 1276 states have call predecessors, (1305), 1305 states have call successors, (1305) [2023-11-19 08:06:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5168 states to 5168 states and 7528 transitions. [2023-11-19 08:06:22,446 INFO L78 Accepts]: Start accepts. Automaton has 5168 states and 7528 transitions. Word has length 356 [2023-11-19 08:06:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:22,447 INFO L495 AbstractCegarLoop]: Abstraction has 5168 states and 7528 transitions. [2023-11-19 08:06:22,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2023-11-19 08:06:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5168 states and 7528 transitions. [2023-11-19 08:06:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-11-19 08:06:22,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:22,472 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:22,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:22,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:22,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:22,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:22,687 INFO L85 PathProgramCache]: Analyzing trace with hash -309302832, now seen corresponding path program 1 times [2023-11-19 08:06:22,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:22,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302944948] [2023-11-19 08:06:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:22,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:22,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635372723] [2023-11-19 08:06:22,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:22,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:22,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:22,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:06:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:24,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 4345 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:06:24,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-19 08:06:24,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:24,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:24,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302944948] [2023-11-19 08:06:24,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:24,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635372723] [2023-11-19 08:06:24,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635372723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:24,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:24,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:06:24,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012748109] [2023-11-19 08:06:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:24,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:24,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:24,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:24,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:24,595 INFO L87 Difference]: Start difference. First operand 5168 states and 7528 transitions. Second operand has 6 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 5 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 4 states have call predecessors, (43), 5 states have call successors, (43) [2023-11-19 08:06:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:25,252 INFO L93 Difference]: Finished difference Result 10403 states and 15191 transitions. [2023-11-19 08:06:25,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:25,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 5 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 4 states have call predecessors, (43), 5 states have call successors, (43) Word has length 363 [2023-11-19 08:06:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:25,329 INFO L225 Difference]: With dead ends: 10403 [2023-11-19 08:06:25,329 INFO L226 Difference]: Without dead ends: 5262 [2023-11-19 08:06:25,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:06:25,365 INFO L413 NwaCegarLoop]: 4093 mSDtfsCounter, 121 mSDsluCounter, 16160 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 20253 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:25,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 20253 Invalid, 114 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:06:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2023-11-19 08:06:25,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 5262. [2023-11-19 08:06:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 3674 states have (on average 1.3557430593358737) internal successors, (4981), 3760 states have internal predecessors, (4981), 1342 states have call successors, (1342), 244 states have call predecessors, (1342), 245 states have return successors, (1343), 1312 states have call predecessors, (1343), 1341 states have call successors, (1343) [2023-11-19 08:06:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 7666 transitions. [2023-11-19 08:06:25,727 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 7666 transitions. Word has length 363 [2023-11-19 08:06:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:25,729 INFO L495 AbstractCegarLoop]: Abstraction has 5262 states and 7666 transitions. [2023-11-19 08:06:25,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 5 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (43), 4 states have call predecessors, (43), 5 states have call successors, (43) [2023-11-19 08:06:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 7666 transitions. [2023-11-19 08:06:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-11-19 08:06:25,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:25,764 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:25,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:25,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:06:25,993 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:25,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:25,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1929139955, now seen corresponding path program 1 times [2023-11-19 08:06:25,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914131711] [2023-11-19 08:06:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:26,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914131711] [2023-11-19 08:06:26,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:06:26,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762160710] [2023-11-19 08:06:26,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:26,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:26,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:26,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:26,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:06:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:27,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 4688 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:28,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2023-11-19 08:06:28,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-11-19 08:06:28,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762160710] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:28,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:06:28,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-19 08:06:28,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226318411] [2023-11-19 08:06:28,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:28,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:28,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:28,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:28,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:28,444 INFO L87 Difference]: Start difference. First operand 5262 states and 7666 transitions. Second operand has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2023-11-19 08:06:28,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:28,738 INFO L93 Difference]: Finished difference Result 10587 states and 15437 transitions. [2023-11-19 08:06:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) Word has length 446 [2023-11-19 08:06:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:28,775 INFO L225 Difference]: With dead ends: 10587 [2023-11-19 08:06:28,775 INFO L226 Difference]: Without dead ends: 5352 [2023-11-19 08:06:28,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 886 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:28,885 INFO L413 NwaCegarLoop]: 4064 mSDtfsCounter, 70 mSDsluCounter, 4078 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 8142 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:28,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 8142 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:06:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5352 states. [2023-11-19 08:06:29,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5352. [2023-11-19 08:06:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 3740 states have (on average 1.352673796791444) internal successors, (5059), 3826 states have internal predecessors, (5059), 1366 states have call successors, (1366), 244 states have call predecessors, (1366), 245 states have return successors, (1367), 1336 states have call predecessors, (1367), 1365 states have call successors, (1367) [2023-11-19 08:06:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 7792 transitions. [2023-11-19 08:06:29,117 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 7792 transitions. Word has length 446 [2023-11-19 08:06:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:29,118 INFO L495 AbstractCegarLoop]: Abstraction has 5352 states and 7792 transitions. [2023-11-19 08:06:29,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101) [2023-11-19 08:06:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 7792 transitions. [2023-11-19 08:06:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-19 08:06:29,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:29,142 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:29,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:29,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 08:06:29,353 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:29,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash 92954294, now seen corresponding path program 1 times [2023-11-19 08:06:29,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:29,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775971935] [2023-11-19 08:06:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:29,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:29,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169666839] [2023-11-19 08:06:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:29,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:29,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:29,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:29,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:06:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:31,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 4555 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:06:31,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-19 08:06:31,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:31,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:31,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775971935] [2023-11-19 08:06:31,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:31,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169666839] [2023-11-19 08:06:31,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169666839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:31,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:31,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:06:31,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425144866] [2023-11-19 08:06:31,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:31,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:31,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:31,257 INFO L87 Difference]: Start difference. First operand 5352 states and 7792 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2023-11-19 08:06:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:31,522 INFO L93 Difference]: Finished difference Result 10817 states and 15814 transitions. [2023-11-19 08:06:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) Word has length 412 [2023-11-19 08:06:31,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:31,558 INFO L225 Difference]: With dead ends: 10817 [2023-11-19 08:06:31,558 INFO L226 Difference]: Without dead ends: 5492 [2023-11-19 08:06:31,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:31,577 INFO L413 NwaCegarLoop]: 4101 mSDtfsCounter, 55 mSDsluCounter, 12274 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 16375 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:31,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 16375 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:31,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5492 states. [2023-11-19 08:06:31,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5492 to 5360. [2023-11-19 08:06:31,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 3746 states have (on average 1.3521089161772557) internal successors, (5065), 3832 states have internal predecessors, (5065), 1366 states have call successors, (1366), 244 states have call predecessors, (1366), 247 states have return successors, (1371), 1338 states have call predecessors, (1371), 1365 states have call successors, (1371) [2023-11-19 08:06:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 7802 transitions. [2023-11-19 08:06:31,812 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 7802 transitions. Word has length 412 [2023-11-19 08:06:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:31,813 INFO L495 AbstractCegarLoop]: Abstraction has 5360 states and 7802 transitions. [2023-11-19 08:06:31,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (51), 3 states have call predecessors, (51), 2 states have call successors, (51) [2023-11-19 08:06:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 7802 transitions. [2023-11-19 08:06:31,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-11-19 08:06:31,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:31,833 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:31,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:32,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:32,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:32,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1088742143, now seen corresponding path program 2 times [2023-11-19 08:06:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:32,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248800168] [2023-11-19 08:06:32,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:32,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:32,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248800168] [2023-11-19 08:06:32,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:06:32,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964199123] [2023-11-19 08:06:32,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:06:32,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:32,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:32,408 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:32,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:06:33,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 08:06:33,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:06:33,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:33,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2023-11-19 08:06:33,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964199123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:33,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:33,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:33,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189138092] [2023-11-19 08:06:33,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:33,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:33,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:33,787 INFO L87 Difference]: Start difference. First operand 5360 states and 7802 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-19 08:06:34,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:34,052 INFO L93 Difference]: Finished difference Result 11339 states and 16624 transitions. [2023-11-19 08:06:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:34,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) Word has length 458 [2023-11-19 08:06:34,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:34,089 INFO L225 Difference]: With dead ends: 11339 [2023-11-19 08:06:34,089 INFO L226 Difference]: Without dead ends: 6006 [2023-11-19 08:06:34,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:34,110 INFO L413 NwaCegarLoop]: 4568 mSDtfsCounter, 279 mSDsluCounter, 8737 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 13305 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:34,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 13305 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:34,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6006 states. [2023-11-19 08:06:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6006 to 5364. [2023-11-19 08:06:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5364 states, 3750 states have (on average 1.3517333333333332) internal successors, (5069), 3836 states have internal predecessors, (5069), 1366 states have call successors, (1366), 244 states have call predecessors, (1366), 247 states have return successors, (1371), 1338 states have call predecessors, (1371), 1365 states have call successors, (1371) [2023-11-19 08:06:34,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 7806 transitions. [2023-11-19 08:06:34,361 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 7806 transitions. Word has length 458 [2023-11-19 08:06:34,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:34,363 INFO L495 AbstractCegarLoop]: Abstraction has 5364 states and 7806 transitions. [2023-11-19 08:06:34,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (57), 1 states have call predecessors, (57), 1 states have call successors, (57) [2023-11-19 08:06:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 7806 transitions. [2023-11-19 08:06:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2023-11-19 08:06:34,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:34,383 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:34,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:34,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:34,596 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:34,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1767149534, now seen corresponding path program 1 times [2023-11-19 08:06:34,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:34,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808795308] [2023-11-19 08:06:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:34,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:34,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:34,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808795308] [2023-11-19 08:06:34,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:06:34,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632499652] [2023-11-19 08:06:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:34,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:34,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:34,936 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:34,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04501380-2255-4cc1-859a-9f042620b016/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:06:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:36,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 4763 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:06:36,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-11-19 08:06:36,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-11-19 08:06:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632499652] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:06:37,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:06:37,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-19 08:06:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143591424] [2023-11-19 08:06:37,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:37,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:06:37,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:37,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:06:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:06:37,222 INFO L87 Difference]: Start difference. First operand 5364 states and 7806 transitions. Second operand has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (101), 2 states have call predecessors, (101), 2 states have call successors, (101)