./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--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:54:59,187 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:54:59,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 21:54:59,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:54:59,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:54:59,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:54:59,319 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:54:59,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:54:59,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:54:59,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:54:59,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:54:59,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:54:59,325 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:54:59,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:54:59,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:54:59,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:54:59,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:54:59,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:54:59,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:54:59,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:54:59,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:54:59,333 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:54:59,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:54:59,334 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:54:59,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:54:59,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:59,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:54:59,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:54:59,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:54:59,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:54:59,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:54:59,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:54:59,341 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:54:59,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:54:59,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:54:59,343 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:54:59,343 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_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2023-11-06 21:54:59,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:54:59,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:54:59,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:54:59,736 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:54:59,737 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:54:59,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2023-11-06 21:55:03,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:55:04,159 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:55:04,159 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2023-11-06 21:55:04,218 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/data/02690e788/50b23c30925642ea87a252b785d3cf26/FLAG1f4dcaed5 [2023-11-06 21:55:04,242 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/data/02690e788/50b23c30925642ea87a252b785d3cf26 [2023-11-06 21:55:04,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:55:04,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:55:04,260 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:04,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:55:04,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:55:04,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:04" (1/1) ... [2023-11-06 21:55:04,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60edbefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:04, skipping insertion in model container [2023-11-06 21:55:04,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:55:04" (1/1) ... [2023-11-06 21:55:04,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:55:06,548 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_89f7c111-e75d-4b80-baec-5bf54b045abd/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2023-11-06 21:55:06,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:06,681 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:55:07,101 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_89f7c111-e75d-4b80-baec-5bf54b045abd/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2023-11-06 21:55:07,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:55:07,256 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:55:07,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07 WrapperNode [2023-11-06 21:55:07,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:55:07,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:07,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:55:07,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:55:07,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,356 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,504 INFO L138 Inliner]: procedures = 205, calls = 1435, calls flagged for inlining = 91, calls inlined = 85, statements flattened = 3691 [2023-11-06 21:55:07,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:55:07,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:55:07,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:55:07,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:55:07,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:55:07,826 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:55:07,826 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:55:07,826 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:55:07,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (1/1) ... [2023-11-06 21:55:07,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:55:07,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:55:07,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:55:07,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f7c111-e75d-4b80-baec-5bf54b045abd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:55:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-06 21:55:07,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-06 21:55:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2023-11-06 21:55:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2023-11-06 21:55:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 21:55:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 21:55:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-06 21:55:07,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-06 21:55:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-06 21:55:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-06 21:55:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2023-11-06 21:55:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2023-11-06 21:55:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2023-11-06 21:55:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2023-11-06 21:55:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-06 21:55:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-06 21:55:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 21:55:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 21:55:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2023-11-06 21:55:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2023-11-06 21:55:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-06 21:55:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-06 21:55:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-06 21:55:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-06 21:55:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 21:55:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 21:55:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2023-11-06 21:55:08,026 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2023-11-06 21:55:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2023-11-06 21:55:08,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2023-11-06 21:55:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 21:55:08,026 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 21:55:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:55:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:55:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2023-11-06 21:55:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2023-11-06 21:55:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-06 21:55:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-06 21:55:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2023-11-06 21:55:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2023-11-06 21:55:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:55:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-06 21:55:08,033 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-06 21:55:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2023-11-06 21:55:08,033 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2023-11-06 21:55:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2023-11-06 21:55:08,033 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2023-11-06 21:55:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:55:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2023-11-06 21:55:08,034 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2023-11-06 21:55:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2023-11-06 21:55:08,034 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2023-11-06 21:55:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-06 21:55:08,035 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-06 21:55:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2023-11-06 21:55:08,035 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2023-11-06 21:55:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-06 21:55:08,035 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-06 21:55:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2023-11-06 21:55:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2023-11-06 21:55:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:55:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 21:55:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-06 21:55:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-06 21:55:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2023-11-06 21:55:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2023-11-06 21:55:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2023-11-06 21:55:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2023-11-06 21:55:08,043 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-06 21:55:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-06 21:55:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2023-11-06 21:55:08,044 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2023-11-06 21:55:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2023-11-06 21:55:08,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2023-11-06 21:55:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2023-11-06 21:55:08,044 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2023-11-06 21:55:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-06 21:55:08,045 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-06 21:55:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-06 21:55:08,045 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-06 21:55:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 21:55:08,045 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2023-11-06 21:55:08,045 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2023-11-06 21:55:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-06 21:55:08,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-06 21:55:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2023-11-06 21:55:08,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2023-11-06 21:55:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 21:55:08,046 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2023-11-06 21:55:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2023-11-06 21:55:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:55:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2023-11-06 21:55:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2023-11-06 21:55:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-06 21:55:08,047 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-06 21:55:08,047 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-06 21:55:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-06 21:55:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-06 21:55:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-06 21:55:08,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-06 21:55:08,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-06 21:55:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2023-11-06 21:55:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2023-11-06 21:55:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-06 21:55:08,049 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-06 21:55:08,049 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-06 21:55:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-06 21:55:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:55:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2023-11-06 21:55:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2023-11-06 21:55:08,050 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2023-11-06 21:55:08,050 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2023-11-06 21:55:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 21:55:08,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 21:55:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2023-11-06 21:55:08,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2023-11-06 21:55:08,051 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2023-11-06 21:55:08,052 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2023-11-06 21:55:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:55:08,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:55:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:55:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 21:55:08,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 21:55:08,053 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2023-11-06 21:55:08,054 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2023-11-06 21:55:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2023-11-06 21:55:08,054 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2023-11-06 21:55:08,054 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-06 21:55:08,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-06 21:55:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2023-11-06 21:55:08,055 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2023-11-06 21:55:08,055 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2023-11-06 21:55:08,055 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2023-11-06 21:55:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-11-06 21:55:08,056 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-11-06 21:55:08,056 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2023-11-06 21:55:08,056 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2023-11-06 21:55:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-06 21:55:08,057 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-06 21:55:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2023-11-06 21:55:08,057 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2023-11-06 21:55:08,057 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2023-11-06 21:55:08,058 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2023-11-06 21:55:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2023-11-06 21:55:08,058 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2023-11-06 21:55:08,058 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2023-11-06 21:55:08,059 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2023-11-06 21:55:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2023-11-06 21:55:08,059 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2023-11-06 21:55:08,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:55:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2023-11-06 21:55:08,060 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2023-11-06 21:55:08,060 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-06 21:55:08,060 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-06 21:55:08,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:55:08,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:55:08,887 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:55:08,892 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:55:09,317 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-06 21:55:13,677 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:55:13,698 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:55:13,699 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:55:13,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:13 BoogieIcfgContainer [2023-11-06 21:55:13,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:55:13,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:55:13,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:55:13,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:55:13,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:55:04" (1/3) ... [2023-11-06 21:55:13,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3f25f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:13, skipping insertion in model container [2023-11-06 21:55:13,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:55:07" (2/3) ... [2023-11-06 21:55:13,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3f25f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:55:13, skipping insertion in model container [2023-11-06 21:55:13,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:55:13" (3/3) ... [2023-11-06 21:55:13,716 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2023-11-06 21:55:13,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:55:13,740 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:55:13,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:55:13,851 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@737f8b56, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:55:13,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:55:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 1257 states, 929 states have (on average 1.4155005382131325) internal successors, (1315), 962 states have internal predecessors, (1315), 257 states have call successors, (257), 70 states have call predecessors, (257), 69 states have return successors, (252), 244 states have call predecessors, (252), 252 states have call successors, (252) [2023-11-06 21:55:13,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-06 21:55:13,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:13,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:55:13,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:13,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:13,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2008316773, now seen corresponding path program 1 times [2023-11-06 21:55:13,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:13,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015151693] [2023-11-06 21:55:13,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:13,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:55:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:55:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:55:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:55:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:55:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:55:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-06 21:55:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:55:16,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:16,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015151693] [2023-11-06 21:55:16,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015151693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:16,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:16,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 21:55:16,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446806160] [2023-11-06 21:55:16,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:16,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:55:16,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:16,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:55:16,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:55:16,806 INFO L87 Difference]: Start difference. First operand has 1257 states, 929 states have (on average 1.4155005382131325) internal successors, (1315), 962 states have internal predecessors, (1315), 257 states have call successors, (257), 70 states have call predecessors, (257), 69 states have return successors, (252), 244 states have call predecessors, (252), 252 states have call successors, (252) Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:55:24,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:24,932 INFO L93 Difference]: Finished difference Result 2902 states and 4392 transitions. [2023-11-06 21:55:24,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:55:24,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2023-11-06 21:55:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:24,995 INFO L225 Difference]: With dead ends: 2902 [2023-11-06 21:55:24,996 INFO L226 Difference]: Without dead ends: 1634 [2023-11-06 21:55:25,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:55:25,025 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 2390 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 1268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 3683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1268 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:25,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 2605 Invalid, 3683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1268 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-06 21:55:25,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-11-06 21:55:25,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1241. [2023-11-06 21:55:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 920 states have (on average 1.392391304347826) internal successors, (1281), 946 states have internal predecessors, (1281), 252 states have call successors, (252), 69 states have call predecessors, (252), 68 states have return successors, (251), 243 states have call predecessors, (251), 251 states have call successors, (251) [2023-11-06 21:55:25,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1784 transitions. [2023-11-06 21:55:25,416 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1784 transitions. Word has length 101 [2023-11-06 21:55:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:25,417 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 1784 transitions. [2023-11-06 21:55:25,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:55:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1784 transitions. [2023-11-06 21:55:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 21:55:25,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:25,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:55:25,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:55:25,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:25,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2097220871, now seen corresponding path program 1 times [2023-11-06 21:55:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:25,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277669191] [2023-11-06 21:55:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:25,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:26,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:55:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:26,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:55:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:26,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:26,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:55:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:26,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:26,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:55:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 21:55:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:27,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 21:55:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:27,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 21:55:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:55:27,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:27,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277669191] [2023-11-06 21:55:27,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277669191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:27,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:27,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:55:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019703741] [2023-11-06 21:55:27,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:27,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:55:27,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:55:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:55:27,095 INFO L87 Difference]: Start difference. First operand 1241 states and 1784 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-06 21:55:34,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:55:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:37,626 INFO L93 Difference]: Finished difference Result 1638 states and 2449 transitions. [2023-11-06 21:55:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:55:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 104 [2023-11-06 21:55:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:37,647 INFO L225 Difference]: With dead ends: 1638 [2023-11-06 21:55:37,647 INFO L226 Difference]: Without dead ends: 1635 [2023-11-06 21:55:37,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:55:37,652 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 2389 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 3924 mSolverCounterSat, 1248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 3858 SdHoareTripleChecker+Invalid, 5172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1248 IncrementalHoareTripleChecker+Valid, 3924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:37,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 3858 Invalid, 5172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1248 Valid, 3924 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-11-06 21:55:37,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2023-11-06 21:55:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 1242. [2023-11-06 21:55:37,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 921 states have (on average 1.3919652551574375) internal successors, (1282), 947 states have internal predecessors, (1282), 252 states have call successors, (252), 69 states have call predecessors, (252), 68 states have return successors, (251), 243 states have call predecessors, (251), 251 states have call successors, (251) [2023-11-06 21:55:37,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1785 transitions. [2023-11-06 21:55:37,873 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1785 transitions. Word has length 104 [2023-11-06 21:55:37,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:37,878 INFO L495 AbstractCegarLoop]: Abstraction has 1242 states and 1785 transitions. [2023-11-06 21:55:37,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-06 21:55:37,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1785 transitions. [2023-11-06 21:55:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-06 21:55:37,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:37,887 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:55:37,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:55:37,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:37,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash 600900044, now seen corresponding path program 1 times [2023-11-06 21:55:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:37,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727842713] [2023-11-06 21:55:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:39,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:55:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:55:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:39,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:55:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:39,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:55:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:40,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 21:55:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 21:55:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 21:55:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:55:40,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:40,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727842713] [2023-11-06 21:55:40,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727842713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:40,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:40,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:55:40,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381451144] [2023-11-06 21:55:40,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:40,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:55:40,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:55:40,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:55:40,061 INFO L87 Difference]: Start difference. First operand 1242 states and 1785 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:55:49,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:49,108 INFO L93 Difference]: Finished difference Result 2867 states and 4248 transitions. [2023-11-06 21:55:49,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:55:49,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 106 [2023-11-06 21:55:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:49,128 INFO L225 Difference]: With dead ends: 2867 [2023-11-06 21:55:49,128 INFO L226 Difference]: Without dead ends: 1638 [2023-11-06 21:55:49,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:55:49,139 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 2390 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 3966 mSolverCounterSat, 1251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 5217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1251 IncrementalHoareTripleChecker+Valid, 3966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:49,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 3839 Invalid, 5217 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1251 Valid, 3966 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-06 21:55:49,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-11-06 21:55:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1243. [2023-11-06 21:55:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 922 states have (on average 1.3915401301518437) internal successors, (1283), 948 states have internal predecessors, (1283), 252 states have call successors, (252), 69 states have call predecessors, (252), 68 states have return successors, (251), 243 states have call predecessors, (251), 251 states have call successors, (251) [2023-11-06 21:55:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1786 transitions. [2023-11-06 21:55:49,259 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1786 transitions. Word has length 106 [2023-11-06 21:55:49,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:49,262 INFO L495 AbstractCegarLoop]: Abstraction has 1243 states and 1786 transitions. [2023-11-06 21:55:49,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:55:49,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1786 transitions. [2023-11-06 21:55:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 21:55:49,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:49,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:55:49,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:55:49,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:49,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:49,275 INFO L85 PathProgramCache]: Analyzing trace with hash 268508106, now seen corresponding path program 1 times [2023-11-06 21:55:49,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:49,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572907722] [2023-11-06 21:55:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:49,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:55:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:55:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:55:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:55:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:55:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 21:55:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 21:55:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:55:51,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:51,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572907722] [2023-11-06 21:55:51,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572907722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:51,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:51,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:55:51,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32352675] [2023-11-06 21:55:51,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:51,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:55:51,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:51,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:55:51,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:55:51,024 INFO L87 Difference]: Start difference. First operand 1243 states and 1786 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-06 21:55:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:57,366 INFO L93 Difference]: Finished difference Result 2869 states and 4255 transitions. [2023-11-06 21:55:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:55:57,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 104 [2023-11-06 21:55:57,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:57,386 INFO L225 Difference]: With dead ends: 2869 [2023-11-06 21:55:57,386 INFO L226 Difference]: Without dead ends: 1639 [2023-11-06 21:55:57,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:55:57,397 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 3209 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3276 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 4515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:57,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3276 Valid, 2886 Invalid, 4515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-06 21:55:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2023-11-06 21:55:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1244. [2023-11-06 21:55:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 923 states have (on average 1.391115926327194) internal successors, (1284), 949 states have internal predecessors, (1284), 252 states have call successors, (252), 69 states have call predecessors, (252), 68 states have return successors, (251), 243 states have call predecessors, (251), 251 states have call successors, (251) [2023-11-06 21:55:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1787 transitions. [2023-11-06 21:55:57,497 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1787 transitions. Word has length 104 [2023-11-06 21:55:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:57,497 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1787 transitions. [2023-11-06 21:55:57,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-06 21:55:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1787 transitions. [2023-11-06 21:55:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 21:55:57,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:57,503 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:55:57,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:55:57,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:57,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash 982080453, now seen corresponding path program 1 times [2023-11-06 21:55:57,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:57,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780407145] [2023-11-06 21:55:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:57,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:55:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:55:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:55:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:55:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:55:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:55:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 21:55:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 21:55:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 21:55:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:59,585 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:55:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780407145] [2023-11-06 21:55:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780407145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:59,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 21:55:59,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30931323] [2023-11-06 21:55:59,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:59,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:55:59,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:59,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:55:59,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:55:59,589 INFO L87 Difference]: Start difference. First operand 1244 states and 1787 transitions. Second operand has 11 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 4 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:56:10,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:10,819 INFO L93 Difference]: Finished difference Result 2880 states and 4269 transitions. [2023-11-06 21:56:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:56:10,820 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 4 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 108 [2023-11-06 21:56:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:10,838 INFO L225 Difference]: With dead ends: 2880 [2023-11-06 21:56:10,838 INFO L226 Difference]: Without dead ends: 1649 [2023-11-06 21:56:10,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2023-11-06 21:56:10,848 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 3057 mSDsluCounter, 6228 mSDsCounter, 0 mSdLazyCounter, 7378 mSolverCounterSat, 1481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3089 SdHoareTripleChecker+Valid, 7158 SdHoareTripleChecker+Invalid, 8859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1481 IncrementalHoareTripleChecker+Valid, 7378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:10,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3089 Valid, 7158 Invalid, 8859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1481 Valid, 7378 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-11-06 21:56:10,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2023-11-06 21:56:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1253. [2023-11-06 21:56:10,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 931 states have (on average 1.3899033297529537) internal successors, (1294), 957 states have internal predecessors, (1294), 252 states have call successors, (252), 70 states have call predecessors, (252), 69 states have return successors, (251), 243 states have call predecessors, (251), 251 states have call successors, (251) [2023-11-06 21:56:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1797 transitions. [2023-11-06 21:56:10,949 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1797 transitions. Word has length 108 [2023-11-06 21:56:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:10,950 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 1797 transitions. [2023-11-06 21:56:10,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.8) internal successors, (58), 5 states have internal predecessors, (58), 4 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:56:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1797 transitions. [2023-11-06 21:56:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 21:56:10,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:10,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:56:10,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:56:10,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:10,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:10,957 INFO L85 PathProgramCache]: Analyzing trace with hash 432647501, now seen corresponding path program 1 times [2023-11-06 21:56:10,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:10,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802527605] [2023-11-06 21:56:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:10,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:56:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:56:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:56:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 21:56:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 21:56:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 21:56:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:56:12,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:12,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802527605] [2023-11-06 21:56:12,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802527605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:12,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:12,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:56:12,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38467449] [2023-11-06 21:56:12,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:12,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:56:12,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:12,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:56:12,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:56:12,398 INFO L87 Difference]: Start difference. First operand 1253 states and 1797 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:56:19,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:23,599 INFO L93 Difference]: Finished difference Result 4517 states and 6770 transitions. [2023-11-06 21:56:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:56:23,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 109 [2023-11-06 21:56:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:23,634 INFO L225 Difference]: With dead ends: 4517 [2023-11-06 21:56:23,634 INFO L226 Difference]: Without dead ends: 3277 [2023-11-06 21:56:23,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:56:23,645 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 6646 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 3440 mSolverCounterSat, 3111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6833 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 6551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3111 IncrementalHoareTripleChecker+Valid, 3440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:23,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6833 Valid, 3558 Invalid, 6551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3111 Valid, 3440 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-11-06 21:56:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2023-11-06 21:56:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2549. [2023-11-06 21:56:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 1888 states have (on average 1.3903601694915255) internal successors, (2625), 1949 states have internal predecessors, (2625), 515 states have call successors, (515), 139 states have call predecessors, (515), 145 states have return successors, (558), 501 states have call predecessors, (558), 514 states have call successors, (558) [2023-11-06 21:56:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3698 transitions. [2023-11-06 21:56:23,903 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3698 transitions. Word has length 109 [2023-11-06 21:56:23,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:23,904 INFO L495 AbstractCegarLoop]: Abstraction has 2549 states and 3698 transitions. [2023-11-06 21:56:23,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:56:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3698 transitions. [2023-11-06 21:56:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-06 21:56:23,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:23,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:56:23,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:56:23,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:23,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash -537124929, now seen corresponding path program 1 times [2023-11-06 21:56:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:23,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248273942] [2023-11-06 21:56:23,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:56:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:56:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:56:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 21:56:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 21:56:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 21:56:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:56:25,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:25,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248273942] [2023-11-06 21:56:25,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248273942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:25,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:25,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:56:25,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471294094] [2023-11-06 21:56:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:25,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:56:25,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:56:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:56:25,515 INFO L87 Difference]: Start difference. First operand 2549 states and 3698 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:56:32,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:37,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:37,049 INFO L93 Difference]: Finished difference Result 7374 states and 11115 transitions. [2023-11-06 21:56:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:56:37,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 106 [2023-11-06 21:56:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:37,092 INFO L225 Difference]: With dead ends: 7374 [2023-11-06 21:56:37,093 INFO L226 Difference]: Without dead ends: 4838 [2023-11-06 21:56:37,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:56:37,109 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 6333 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 3487 mSolverCounterSat, 2976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6520 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 6463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2976 IncrementalHoareTripleChecker+Valid, 3487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:37,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6520 Valid, 3576 Invalid, 6463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2976 Valid, 3487 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-11-06 21:56:37,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4838 states. [2023-11-06 21:56:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4838 to 3827. [2023-11-06 21:56:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 2832 states have (on average 1.3901836158192091) internal successors, (3937), 2928 states have internal predecessors, (3937), 776 states have call successors, (776), 208 states have call predecessors, (776), 218 states have return successors, (878), 752 states have call predecessors, (878), 775 states have call successors, (878) [2023-11-06 21:56:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 5591 transitions. [2023-11-06 21:56:37,472 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 5591 transitions. Word has length 106 [2023-11-06 21:56:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:37,473 INFO L495 AbstractCegarLoop]: Abstraction has 3827 states and 5591 transitions. [2023-11-06 21:56:37,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:56:37,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 5591 transitions. [2023-11-06 21:56:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 21:56:37,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:37,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:56:37,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:56:37,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:37,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1967119592, now seen corresponding path program 1 times [2023-11-06 21:56:37,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:37,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032276142] [2023-11-06 21:56:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:37,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:56:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:56:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:56:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 21:56:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 21:56:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 21:56:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:56:38,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:38,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032276142] [2023-11-06 21:56:38,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032276142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:38,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:38,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:56:38,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452416350] [2023-11-06 21:56:38,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:38,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:56:38,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:38,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:56:38,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:56:38,898 INFO L87 Difference]: Start difference. First operand 3827 states and 5591 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:56:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:48,439 INFO L93 Difference]: Finished difference Result 10266 states and 15589 transitions. [2023-11-06 21:56:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:56:48,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 108 [2023-11-06 21:56:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:48,500 INFO L225 Difference]: With dead ends: 10266 [2023-11-06 21:56:48,500 INFO L226 Difference]: Without dead ends: 6452 [2023-11-06 21:56:48,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:56:48,525 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 8034 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2798 mSolverCounterSat, 3976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8224 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 6774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3976 IncrementalHoareTripleChecker+Valid, 2798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:48,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8224 Valid, 2896 Invalid, 6774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3976 Valid, 2798 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-11-06 21:56:48,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2023-11-06 21:56:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 5114. [2023-11-06 21:56:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 3784 states have (on average 1.3890063424947146) internal successors, (5256), 3915 states have internal predecessors, (5256), 1035 states have call successors, (1035), 277 states have call predecessors, (1035), 294 states have return successors, (1217), 1006 states have call predecessors, (1217), 1034 states have call successors, (1217) [2023-11-06 21:56:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 7508 transitions. [2023-11-06 21:56:49,154 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 7508 transitions. Word has length 108 [2023-11-06 21:56:49,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:49,155 INFO L495 AbstractCegarLoop]: Abstraction has 5114 states and 7508 transitions. [2023-11-06 21:56:49,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:56:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 7508 transitions. [2023-11-06 21:56:49,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-06 21:56:49,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:49,161 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:56:49,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:56:49,162 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:49,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:49,164 INFO L85 PathProgramCache]: Analyzing trace with hash 895577156, now seen corresponding path program 1 times [2023-11-06 21:56:49,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:49,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508533277] [2023-11-06 21:56:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:49,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:56:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:56:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:56:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:56:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 21:56:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-06 21:56:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-06 21:56:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:50,657 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:56:50,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:50,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508533277] [2023-11-06 21:56:50,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508533277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:50,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:50,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:56:50,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812266859] [2023-11-06 21:56:50,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:50,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:56:50,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:50,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:56:50,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:56:50,661 INFO L87 Difference]: Start difference. First operand 5114 states and 7508 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:57:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:02,044 INFO L93 Difference]: Finished difference Result 13132 states and 19984 transitions. [2023-11-06 21:57:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:57:02,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 107 [2023-11-06 21:57:02,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:02,123 INFO L225 Difference]: With dead ends: 13132 [2023-11-06 21:57:02,123 INFO L226 Difference]: Without dead ends: 8031 [2023-11-06 21:57:02,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:57:02,153 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 6340 mSDsluCounter, 2969 mSDsCounter, 0 mSdLazyCounter, 4041 mSolverCounterSat, 2949 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6529 SdHoareTripleChecker+Valid, 3890 SdHoareTripleChecker+Invalid, 6990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2949 IncrementalHoareTripleChecker+Valid, 4041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:02,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6529 Valid, 3890 Invalid, 6990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2949 Valid, 4041 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-11-06 21:57:02,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8031 states. [2023-11-06 21:57:02,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8031 to 6380. [2023-11-06 21:57:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6380 states, 4722 states have (on average 1.3879711986446421) internal successors, (6554), 4886 states have internal predecessors, (6554), 1289 states have call successors, (1289), 346 states have call predecessors, (1289), 368 states have return successors, (1549), 1255 states have call predecessors, (1549), 1288 states have call successors, (1549) [2023-11-06 21:57:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6380 states to 6380 states and 9392 transitions. [2023-11-06 21:57:03,029 INFO L78 Accepts]: Start accepts. Automaton has 6380 states and 9392 transitions. Word has length 107 [2023-11-06 21:57:03,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:03,029 INFO L495 AbstractCegarLoop]: Abstraction has 6380 states and 9392 transitions. [2023-11-06 21:57:03,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 21:57:03,031 INFO L276 IsEmpty]: Start isEmpty. Operand 6380 states and 9392 transitions. [2023-11-06 21:57:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 21:57:03,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:03,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:57:03,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:57:03,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:03,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:03,040 INFO L85 PathProgramCache]: Analyzing trace with hash 895146489, now seen corresponding path program 1 times [2023-11-06 21:57:03,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:03,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121229507] [2023-11-06 21:57:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:57:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:57:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:57:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-06 21:57:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-06 21:57:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-06 21:57:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-06 21:57:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-06 21:57:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-06 21:57:04,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:04,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121229507] [2023-11-06 21:57:04,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121229507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:04,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:04,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:57:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221033412] [2023-11-06 21:57:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:04,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:57:04,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:04,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:57:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:57:04,349 INFO L87 Difference]: Start difference. First operand 6380 states and 9392 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:57:06,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:57:17,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:17,784 INFO L93 Difference]: Finished difference Result 21620 states and 32815 transitions. [2023-11-06 21:57:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:57:17,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 133 [2023-11-06 21:57:17,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:17,885 INFO L225 Difference]: With dead ends: 21620 [2023-11-06 21:57:17,885 INFO L226 Difference]: Without dead ends: 15253 [2023-11-06 21:57:17,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:57:17,925 INFO L413 NwaCegarLoop]: 1197 mSDtfsCounter, 4489 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 4920 mSolverCounterSat, 2041 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4652 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 6961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2041 IncrementalHoareTripleChecker+Valid, 4920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:17,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4652 Valid, 3907 Invalid, 6961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2041 Valid, 4920 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-11-06 21:57:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15253 states. [2023-11-06 21:57:18,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15253 to 12480. [2023-11-06 21:57:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12480 states, 9230 states have (on average 1.3858071505958829) internal successors, (12791), 9561 states have internal predecessors, (12791), 2508 states have call successors, (2508), 676 states have call predecessors, (2508), 741 states have return successors, (3255), 2439 states have call predecessors, (3255), 2507 states have call successors, (3255) [2023-11-06 21:57:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12480 states to 12480 states and 18554 transitions. [2023-11-06 21:57:19,096 INFO L78 Accepts]: Start accepts. Automaton has 12480 states and 18554 transitions. Word has length 133 [2023-11-06 21:57:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:19,097 INFO L495 AbstractCegarLoop]: Abstraction has 12480 states and 18554 transitions. [2023-11-06 21:57:19,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 21:57:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 12480 states and 18554 transitions. [2023-11-06 21:57:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-06 21:57:19,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:19,109 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:19,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:57:19,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:19,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:19,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1982987789, now seen corresponding path program 1 times [2023-11-06 21:57:19,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:19,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170035893] [2023-11-06 21:57:19,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:19,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:57:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:57:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:57:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 21:57:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 21:57:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-06 21:57:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-06 21:57:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-06 21:57:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 21:57:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 21:57:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 21:57:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-06 21:57:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-06 21:57:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-06 21:57:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-11-06 21:57:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-11-06 21:57:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-06 21:57:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:20,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170035893] [2023-11-06 21:57:20,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170035893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:20,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:20,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 21:57:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806092481] [2023-11-06 21:57:20,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:20,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:57:20,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:20,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:57:20,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:57:20,461 INFO L87 Difference]: Start difference. First operand 12480 states and 18554 transitions. Second operand has 9 states, 8 states have (on average 14.875) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-06 21:57:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:38,645 INFO L93 Difference]: Finished difference Result 43685 states and 68328 transitions. [2023-11-06 21:57:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 21:57:38,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.875) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 208 [2023-11-06 21:57:38,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:38,853 INFO L225 Difference]: With dead ends: 43685 [2023-11-06 21:57:38,853 INFO L226 Difference]: Without dead ends: 31218 [2023-11-06 21:57:38,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2023-11-06 21:57:38,903 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 5998 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 7533 mSolverCounterSat, 3001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6179 SdHoareTripleChecker+Valid, 3626 SdHoareTripleChecker+Invalid, 10534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3001 IncrementalHoareTripleChecker+Valid, 7533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:38,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6179 Valid, 3626 Invalid, 10534 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3001 Valid, 7533 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-11-06 21:57:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31218 states. [2023-11-06 21:57:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31218 to 24456. [2023-11-06 21:57:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24456 states, 18091 states have (on average 1.3922392349787187) internal successors, (25187), 18767 states have internal predecessors, (25187), 4931 states have call successors, (4931), 1178 states have call predecessors, (4931), 1433 states have return successors, (7235), 4912 states have call predecessors, (7235), 4930 states have call successors, (7235) [2023-11-06 21:57:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24456 states to 24456 states and 37353 transitions. [2023-11-06 21:57:42,193 INFO L78 Accepts]: Start accepts. Automaton has 24456 states and 37353 transitions. Word has length 208 [2023-11-06 21:57:42,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:42,194 INFO L495 AbstractCegarLoop]: Abstraction has 24456 states and 37353 transitions. [2023-11-06 21:57:42,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.875) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-06 21:57:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 24456 states and 37353 transitions. [2023-11-06 21:57:42,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-06 21:57:42,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:42,210 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-06 21:57:42,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:57:42,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:42,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1224162056, now seen corresponding path program 1 times [2023-11-06 21:57:42,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:42,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194571206] [2023-11-06 21:57:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:42,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:57:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:57:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:57:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 21:57:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 21:57:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 21:57:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-06 21:57:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-06 21:57:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-06 21:57:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-06 21:57:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-06 21:57:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:57:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-06 21:57:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-06 21:57:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-06 21:57:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-11-06 21:57:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-06 21:57:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-06 21:57:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-06 21:57:44,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:44,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194571206] [2023-11-06 21:57:44,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194571206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:44,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:44,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:57:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046290073] [2023-11-06 21:57:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:44,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:57:44,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:44,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:57:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:57:44,596 INFO L87 Difference]: Start difference. First operand 24456 states and 37353 transitions. Second operand has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-06 21:57:48,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:58:03,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:03,035 INFO L93 Difference]: Finished difference Result 58637 states and 92747 transitions. [2023-11-06 21:58:03,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:58:03,037 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 232 [2023-11-06 21:58:03,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:03,381 INFO L225 Difference]: With dead ends: 58637 [2023-11-06 21:58:03,382 INFO L226 Difference]: Without dead ends: 34205 [2023-11-06 21:58:03,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:58:03,484 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 4269 mSDsluCounter, 4820 mSDsCounter, 0 mSdLazyCounter, 7687 mSolverCounterSat, 2085 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4447 SdHoareTripleChecker+Valid, 5832 SdHoareTripleChecker+Invalid, 9772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2085 IncrementalHoareTripleChecker+Valid, 7687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:03,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4447 Valid, 5832 Invalid, 9772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2085 Valid, 7687 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2023-11-06 21:58:03,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34205 states. [2023-11-06 21:58:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34205 to 24476. [2023-11-06 21:58:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24476 states, 18111 states have (on average 1.391806084699906) internal successors, (25207), 18787 states have internal predecessors, (25207), 4931 states have call successors, (4931), 1178 states have call predecessors, (4931), 1433 states have return successors, (7235), 4912 states have call predecessors, (7235), 4930 states have call successors, (7235) [2023-11-06 21:58:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24476 states to 24476 states and 37373 transitions. [2023-11-06 21:58:07,219 INFO L78 Accepts]: Start accepts. Automaton has 24476 states and 37373 transitions. Word has length 232 [2023-11-06 21:58:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:07,220 INFO L495 AbstractCegarLoop]: Abstraction has 24476 states and 37373 transitions. [2023-11-06 21:58:07,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-06 21:58:07,220 INFO L276 IsEmpty]: Start isEmpty. Operand 24476 states and 37373 transitions. [2023-11-06 21:58:07,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-11-06 21:58:07,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:07,232 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-06 21:58:07,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:58:07,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:07,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:07,233 INFO L85 PathProgramCache]: Analyzing trace with hash 757961239, now seen corresponding path program 1 times [2023-11-06 21:58:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:07,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774596186] [2023-11-06 21:58:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:07,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:08,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:58:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:08,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 21:58:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:08,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:58:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 21:58:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:58:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 21:58:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 21:58:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-06 21:58:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-06 21:58:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-06 21:58:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-06 21:58:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-06 21:58:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 21:58:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-06 21:58:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-06 21:58:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-06 21:58:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-11-06 21:58:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2023-11-06 21:58:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-11-06 21:58:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-06 21:58:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-06 21:58:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-11-06 21:58:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-06 21:58:09,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:09,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774596186] [2023-11-06 21:58:09,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774596186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:09,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94176185] [2023-11-06 21:58:09,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:09,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:09,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:09,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:09,249 INFO L87 Difference]: Start difference. First operand 24476 states and 37373 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-06 21:58:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:22,784 INFO L93 Difference]: Finished difference Result 66300 states and 102821 transitions. [2023-11-06 21:58:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:58:22,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 254 [2023-11-06 21:58:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:23,001 INFO L225 Difference]: With dead ends: 66300 [2023-11-06 21:58:23,001 INFO L226 Difference]: Without dead ends: 41848 [2023-11-06 21:58:23,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:58:23,094 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 5018 mSDsluCounter, 2441 mSDsCounter, 0 mSdLazyCounter, 4174 mSolverCounterSat, 2223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5198 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 6397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2223 IncrementalHoareTripleChecker+Valid, 4174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:23,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5198 Valid, 3938 Invalid, 6397 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2223 Valid, 4174 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-06 21:58:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41848 states.