./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/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_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/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_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/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 71101d2b79b59e25da9ba6ac44f6028cc3034769032ea6dc2bebcfbbe6cd49e1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:14,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:15,095 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 08:03:15,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:15,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:15,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:15,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:15,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:15,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:15,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:15,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:15,153 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:15,153 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:15,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:15,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:15,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:15,156 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:15,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:15,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:15,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:15,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:15,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:15,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:15,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:15,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:15,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:15,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:15,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:15,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:15,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:15,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:15,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:15,166 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:15,166 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:15,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:15,166 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:15,167 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_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71101d2b79b59e25da9ba6ac44f6028cc3034769032ea6dc2bebcfbbe6cd49e1 [2023-11-19 08:03:15,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:15,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:15,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:15,491 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:15,492 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:15,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2023-11-19 08:03:18,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:19,297 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:19,300 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2023-11-19 08:03:19,363 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/data/bc957512d/67102091ad434565ad1d3dbd8c15e477/FLAG6b64d667e [2023-11-19 08:03:19,385 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/data/bc957512d/67102091ad434565ad1d3dbd8c15e477 [2023-11-19 08:03:19,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:19,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:19,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:19,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:19,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:19,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:19" (1/1) ... [2023-11-19 08:03:19,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fd1da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:19, skipping insertion in model container [2023-11-19 08:03:19,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:19" (1/1) ... [2023-11-19 08:03:19,536 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:20,515 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-19 08:03:20,794 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_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[161338,161351] [2023-11-19 08:03:21,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:21,378 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:21,538 WARN L635 FunctionHandler]: implicit declaration of function ldv_assume [2023-11-19 08:03:21,554 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_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[161338,161351] [2023-11-19 08:03:21,715 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 *)"/work/ldvuser/mutilin/launch/work/current--X--drivers/net/--X--defaultlinux-3.16-rc1.tar.xz--X--205_9a--X--cpachecker/linux-3.16-rc1.tar.xz/csd_deg_dscv/998/dscv_tempdir/dscv/ri/205_9a/drivers/net/phy/dp83640.o.c.prepared"), "i" (952), "i" (12UL)); [6658-6659] [2023-11-19 08:03:21,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:21,890 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:21,891 WARN L675 CHandler]: The function ldv_assume is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:21,891 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:21,900 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:21,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21 WrapperNode [2023-11-19 08:03:21,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:21,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:21,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:21,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:21,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,166 INFO L138 Inliner]: procedures = 185, calls = 866, calls flagged for inlining = 75, calls inlined = 64, statements flattened = 2341 [2023-11-19 08:03:22,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:22,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:22,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:22,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:22,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,396 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,429 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:22,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:22,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:22,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:22,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (1/1) ... [2023-11-19 08:03:22,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:22,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:22,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:22,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_278fbf3c-8f17-4deb-8e3e-fbef72c2bdba/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2023-11-19 08:03:22,582 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2023-11-19 08:03:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-19 08:03:22,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-19 08:03:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2023-11-19 08:03:22,583 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2023-11-19 08:03:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-11-19 08:03:22,583 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-11-19 08:03:22,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-11-19 08:03:22,585 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2023-11-19 08:03:22,586 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2023-11-19 08:03:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-19 08:03:22,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-19 08:03:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:03:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2023-11-19 08:03:22,586 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2023-11-19 08:03:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2023-11-19 08:03:22,587 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2023-11-19 08:03:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2023-11-19 08:03:22,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2023-11-19 08:03:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2023-11-19 08:03:22,588 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2023-11-19 08:03:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 08:03:22,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 08:03:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2023-11-19 08:03:22,589 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2023-11-19 08:03:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2023-11-19 08:03:22,590 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2023-11-19 08:03:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2023-11-19 08:03:22,591 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2023-11-19 08:03:22,591 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2023-11-19 08:03:22,592 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2023-11-19 08:03:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-19 08:03:22,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-19 08:03:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 08:03:22,592 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 08:03:22,592 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2023-11-19 08:03:22,593 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2023-11-19 08:03:22,593 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2023-11-19 08:03:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2023-11-19 08:03:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-11-19 08:03:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-11-19 08:03:22,594 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2023-11-19 08:03:22,594 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2023-11-19 08:03:22,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:03:22,595 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 08:03:22,595 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 08:03:22,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 08:03:22,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 08:03:22,595 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2023-11-19 08:03:22,596 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2023-11-19 08:03:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2023-11-19 08:03:22,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2023-11-19 08:03:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 08:03:22,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 08:03:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2023-11-19 08:03:22,597 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2023-11-19 08:03:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 08:03:22,597 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 08:03:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:03:22,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:03:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 08:03:22,597 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2023-11-19 08:03:22,598 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2023-11-19 08:03:22,599 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 08:03:22,599 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 08:03:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-11-19 08:03:22,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-11-19 08:03:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2023-11-19 08:03:22,600 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2023-11-19 08:03:22,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:03:22,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 08:03:22,601 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 08:03:22,601 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 08:03:22,601 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 08:03:22,602 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 08:03:22,602 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2023-11-19 08:03:22,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2023-11-19 08:03:22,602 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-11-19 08:03:22,602 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-11-19 08:03:22,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 08:03:22,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-19 08:03:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-19 08:03:22,603 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2023-11-19 08:03:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2023-11-19 08:03:22,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-11-19 08:03:22,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-11-19 08:03:22,604 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 08:03:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 08:03:22,604 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2023-11-19 08:03:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2023-11-19 08:03:22,605 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2023-11-19 08:03:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2023-11-19 08:03:22,605 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-19 08:03:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-19 08:03:22,605 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2023-11-19 08:03:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2023-11-19 08:03:22,606 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-11-19 08:03:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-11-19 08:03:22,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:03:22,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 08:03:22,606 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2023-11-19 08:03:22,606 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2023-11-19 08:03:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 08:03:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 08:03:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 08:03:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 08:03:22,607 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2023-11-19 08:03:22,607 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2023-11-19 08:03:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2023-11-19 08:03:22,608 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2023-11-19 08:03:22,608 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2023-11-19 08:03:22,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2023-11-19 08:03:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2023-11-19 08:03:22,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2023-11-19 08:03:22,609 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 08:03:22,610 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 08:03:22,610 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 08:03:22,611 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 08:03:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2023-11-19 08:03:22,611 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2023-11-19 08:03:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2023-11-19 08:03:22,611 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2023-11-19 08:03:22,611 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2023-11-19 08:03:22,612 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2023-11-19 08:03:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2023-11-19 08:03:22,612 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2023-11-19 08:03:22,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-19 08:03:22,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-19 08:03:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 08:03:22,613 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 08:03:22,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:22,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2023-11-19 08:03:22,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2023-11-19 08:03:22,614 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2023-11-19 08:03:22,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2023-11-19 08:03:22,615 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 08:03:22,615 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 08:03:23,180 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:23,184 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:23,753 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-19 08:03:25,960 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:25,988 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:25,988 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 08:03:26,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:26 BoogieIcfgContainer [2023-11-19 08:03:26,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:26,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:26,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:26,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:26,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:19" (1/3) ... [2023-11-19 08:03:26,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3eabc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:26, skipping insertion in model container [2023-11-19 08:03:26,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:21" (2/3) ... [2023-11-19 08:03:26,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3eabc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:26, skipping insertion in model container [2023-11-19 08:03:26,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:26" (3/3) ... [2023-11-19 08:03:26,023 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2023-11-19 08:03:26,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:26,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:03:26,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:26,176 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;@1446d96d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:26,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:03:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 937 states, 667 states have (on average 1.3508245877061469) internal successors, (901), 684 states have internal predecessors, (901), 206 states have call successors, (206), 63 states have call predecessors, (206), 62 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) [2023-11-19 08:03:26,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 08:03:26,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:26,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:26,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:26,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2123846660, now seen corresponding path program 1 times [2023-11-19 08:03:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:26,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924065023] [2023-11-19 08:03:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:26,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:27,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:03:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:03:27,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:27,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924065023] [2023-11-19 08:03:27,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924065023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:27,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:27,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:03:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940887734] [2023-11-19 08:03:27,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:27,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:27,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:27,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:27,152 INFO L87 Difference]: Start difference. First operand has 937 states, 667 states have (on average 1.3508245877061469) internal successors, (901), 684 states have internal predecessors, (901), 206 states have call successors, (206), 63 states have call predecessors, (206), 62 states have return successors, (203), 202 states have call predecessors, (203), 203 states have call successors, (203) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:03:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:32,085 INFO L93 Difference]: Finished difference Result 2981 states and 4369 transitions. [2023-11-19 08:03:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:03:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2023-11-19 08:03:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:32,127 INFO L225 Difference]: With dead ends: 2981 [2023-11-19 08:03:32,127 INFO L226 Difference]: Without dead ends: 1999 [2023-11-19 08:03:32,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:32,144 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 1862 mSDsluCounter, 2884 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 3809 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:32,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 3809 Invalid, 2882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [572 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 08:03:32,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2023-11-19 08:03:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1819. [2023-11-19 08:03:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1301 states have (on average 1.3189853958493467) internal successors, (1716), 1326 states have internal predecessors, (1716), 394 states have call successors, (394), 122 states have call predecessors, (394), 123 states have return successors, (407), 392 states have call predecessors, (407), 393 states have call successors, (407) [2023-11-19 08:03:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2517 transitions. [2023-11-19 08:03:32,381 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2517 transitions. Word has length 32 [2023-11-19 08:03:32,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:32,382 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 2517 transitions. [2023-11-19 08:03:32,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:03:32,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2517 transitions. [2023-11-19 08:03:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 08:03:32,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:32,398 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:03:32,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:03:32,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:32,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:32,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1609537768, now seen corresponding path program 1 times [2023-11-19 08:03:32,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:32,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582695707] [2023-11-19 08:03:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:32,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:03:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-19 08:03:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:03:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:03:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:03:32,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:32,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582695707] [2023-11-19 08:03:32,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582695707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:32,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:32,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:03:32,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057505445] [2023-11-19 08:03:32,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:32,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:32,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:32,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:32,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:32,755 INFO L87 Difference]: Start difference. First operand 1819 states and 2517 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 08:03:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:37,808 INFO L93 Difference]: Finished difference Result 4097 states and 5826 transitions. [2023-11-19 08:03:37,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:03:37,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2023-11-19 08:03:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:37,831 INFO L225 Difference]: With dead ends: 4097 [2023-11-19 08:03:37,832 INFO L226 Difference]: Without dead ends: 2286 [2023-11-19 08:03:37,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:03:37,845 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 903 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:37,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2116 Invalid, 2778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [547 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-19 08:03:37,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2023-11-19 08:03:38,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 1923. [2023-11-19 08:03:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1381 states have (on average 1.3178855901520636) internal successors, (1820), 1409 states have internal predecessors, (1820), 406 states have call successors, (406), 131 states have call predecessors, (406), 135 states have return successors, (425), 404 states have call predecessors, (425), 405 states have call successors, (425) [2023-11-19 08:03:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2651 transitions. [2023-11-19 08:03:38,030 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2651 transitions. Word has length 77 [2023-11-19 08:03:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:38,030 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 2651 transitions. [2023-11-19 08:03:38,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 08:03:38,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2651 transitions. [2023-11-19 08:03:38,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 08:03:38,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:38,040 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:38,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:03:38,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:38,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:38,042 INFO L85 PathProgramCache]: Analyzing trace with hash 854031937, now seen corresponding path program 1 times [2023-11-19 08:03:38,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:38,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045357077] [2023-11-19 08:03:38,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:38,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:03:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:03:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:03:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-19 08:03:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:03:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:03:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:03:38,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:38,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045357077] [2023-11-19 08:03:38,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045357077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:38,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:38,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:03:38,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988423585] [2023-11-19 08:03:38,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:38,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:38,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:38,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:38,402 INFO L87 Difference]: Start difference. First operand 1923 states and 2651 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 08:03:44,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:03:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:46,379 INFO L93 Difference]: Finished difference Result 5971 states and 8521 transitions. [2023-11-19 08:03:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:03:46,380 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 101 [2023-11-19 08:03:46,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:46,417 INFO L225 Difference]: With dead ends: 5971 [2023-11-19 08:03:46,417 INFO L226 Difference]: Without dead ends: 4077 [2023-11-19 08:03:46,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:03:46,430 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 2564 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 1144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2741 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:46,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2741 Valid, 2011 Invalid, 3680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1144 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-19 08:03:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2023-11-19 08:03:46,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 3376. [2023-11-19 08:03:46,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2448 states have (on average 1.3112745098039216) internal successors, (3210), 2490 states have internal predecessors, (3210), 676 states have call successors, (676), 242 states have call predecessors, (676), 251 states have return successors, (703), 673 states have call predecessors, (703), 675 states have call successors, (703) [2023-11-19 08:03:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4589 transitions. [2023-11-19 08:03:46,711 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4589 transitions. Word has length 101 [2023-11-19 08:03:46,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:46,713 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4589 transitions. [2023-11-19 08:03:46,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 08:03:46,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4589 transitions. [2023-11-19 08:03:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 08:03:46,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:46,723 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:46,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:03:46,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:46,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1688147359, now seen corresponding path program 1 times [2023-11-19 08:03:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:46,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128623027] [2023-11-19 08:03:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:46,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:03:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:03:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:46,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:03:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:03:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:47,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:03:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 08:03:47,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:47,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128623027] [2023-11-19 08:03:47,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128623027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:47,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:47,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:03:47,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424885532] [2023-11-19 08:03:47,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:47,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:03:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:47,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:03:47,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:03:47,106 INFO L87 Difference]: Start difference. First operand 3376 states and 4589 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-19 08:03:52,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 08:03:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:53,470 INFO L93 Difference]: Finished difference Result 5819 states and 8254 transitions. [2023-11-19 08:03:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:03:53,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 101 [2023-11-19 08:03:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:53,505 INFO L225 Difference]: With dead ends: 5819 [2023-11-19 08:03:53,506 INFO L226 Difference]: Without dead ends: 4072 [2023-11-19 08:03:53,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:03:53,515 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 477 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:53,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2351 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-19 08:03:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2023-11-19 08:03:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 3380. [2023-11-19 08:03:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3380 states, 2452 states have (on average 1.3107667210440457) internal successors, (3214), 2494 states have internal predecessors, (3214), 676 states have call successors, (676), 242 states have call predecessors, (676), 251 states have return successors, (703), 673 states have call predecessors, (703), 675 states have call successors, (703) [2023-11-19 08:03:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 4593 transitions. [2023-11-19 08:03:53,804 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 4593 transitions. Word has length 101 [2023-11-19 08:03:53,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:53,805 INFO L495 AbstractCegarLoop]: Abstraction has 3380 states and 4593 transitions. [2023-11-19 08:03:53,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-19 08:03:53,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 4593 transitions. [2023-11-19 08:03:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 08:03:53,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:53,819 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:53,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:03:53,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:53,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:53,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2116324384, now seen corresponding path program 1 times [2023-11-19 08:03:53,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:53,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454366252] [2023-11-19 08:03:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:53,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:54,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:03:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:03:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:03:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:03:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 08:03:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:54,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:03:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:54,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:03:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 08:03:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 08:03:54,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:54,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454366252] [2023-11-19 08:03:54,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454366252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:54,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:54,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 08:03:54,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532687808] [2023-11-19 08:03:54,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:54,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:03:54,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:54,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:03:54,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:03:54,961 INFO L87 Difference]: Start difference. First operand 3380 states and 4593 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8)