./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d6a36286e10ea43dd9b822762f3f2df49a2903c1188868a0fefb608a216bfe78 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:26:31,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:26:31,304 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:26:31,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:26:31,311 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:26:31,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:26:31,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:26:31,336 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:26:31,337 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:26:31,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:26:31,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:26:31,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:26:31,340 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:26:31,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:26:31,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:26:31,341 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:26:31,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:26:31,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:26:31,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:26:31,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:26:31,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:26:31,344 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:26:31,345 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:26:31,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:26:31,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:26:31,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:26:31,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:26:31,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:26:31,347 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:26:31,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:26:31,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:26:31,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:26:31,348 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:26:31,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:26:31,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:26:31,349 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:26:31,349 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_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a36286e10ea43dd9b822762f3f2df49a2903c1188868a0fefb608a216bfe78 [2023-11-12 02:26:31,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:26:31,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:26:31,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:26:31,767 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:26:31,768 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:26:31,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i [2023-11-12 02:26:34,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:26:35,701 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:26:35,702 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i [2023-11-12 02:26:35,750 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/data/bc11422b2/4efdbde9e09f49309b9a5ed23fae5459/FLAG6b7b1ba2f [2023-11-12 02:26:35,768 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/data/bc11422b2/4efdbde9e09f49309b9a5ed23fae5459 [2023-11-12 02:26:35,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:26:35,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:26:35,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:35,782 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:26:35,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:26:35,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:35" (1/1) ... [2023-11-12 02:26:35,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a15ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:35, skipping insertion in model container [2023-11-12 02:26:35,790 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:35" (1/1) ... [2023-11-12 02:26:35,916 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:26:36,454 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3846] [2023-11-12 02:26:36,468 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3847-3848] [2023-11-12 02:26:36,686 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_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i[114996,115009] [2023-11-12 02:26:37,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:37,359 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:26:37,471 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3846] [2023-11-12 02:26:37,471 WARN L1270 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3847-3848] [2023-11-12 02:26:37,492 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_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i[114996,115009] [2023-11-12 02:26:37,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:37,890 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:26:37,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37 WrapperNode [2023-11-12 02:26:37,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:37,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:37,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:26:37,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:26:37,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:37,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,143 INFO L138 Inliner]: procedures = 157, calls = 2028, calls flagged for inlining = 60, calls inlined = 53, statements flattened = 3485 [2023-11-12 02:26:38,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:38,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:26:38,145 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:26:38,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:26:38,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,506 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:26:38,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:26:38,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:26:38,508 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:26:38,509 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (1/1) ... [2023-11-12 02:26:38,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:26:38,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:38,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:26:38,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a59e2e-7900-47b3-b333-4fcfac9dbb10/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:26:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2023-11-12 02:26:38,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2023-11-12 02:26:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 02:26:38,601 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-12 02:26:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-12 02:26:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_tiocmget [2023-11-12 02:26:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_tiocmget [2023-11-12 02:26:38,602 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2023-11-12 02:26:38,602 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2023-11-12 02:26:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 02:26:38,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 02:26:38,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-12 02:26:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-12 02:26:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2023-11-12 02:26:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2023-11-12 02:26:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:26:38,606 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_calc_interface [2023-11-12 02:26:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_calc_interface [2023-11-12 02:26:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2023-11-12 02:26:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2023-11-12 02:26:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_resume [2023-11-12 02:26:38,607 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_resume [2023-11-12 02:26:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-12 02:26:38,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-12 02:26:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 02:26:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 02:26:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:26:38,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:26:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_close [2023-11-12 02:26:38,611 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_close [2023-11-12 02:26:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-12 02:26:38,611 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-12 02:26:38,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-12 02:26:38,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-12 02:26:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_write [2023-11-12 02:26:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_write [2023-11-12 02:26:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_submit_rx_urbs [2023-11-12 02:26:38,613 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_submit_rx_urbs [2023-11-12 02:26:38,613 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_port_probe [2023-11-12 02:26:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_port_probe [2023-11-12 02:26:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_send_setup [2023-11-12 02:26:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_send_setup [2023-11-12 02:26:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2023-11-12 02:26:38,614 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2023-11-12 02:26:38,614 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 02:26:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 02:26:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2023-11-12 02:26:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2023-11-12 02:26:38,615 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2023-11-12 02:26:38,615 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2023-11-12 02:26:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:26:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2023-11-12 02:26:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2023-11-12 02:26:38,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 02:26:38,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 02:26:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2023-11-12 02:26:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2023-11-12 02:26:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-12 02:26:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-12 02:26:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 02:26:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 02:26:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 02:26:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 02:26:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2023-11-12 02:26:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2023-11-12 02:26:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:26:38,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:26:38,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2023-11-12 02:26:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2023-11-12 02:26:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:26:38,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2023-11-12 02:26:38,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2023-11-12 02:26:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 02:26:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 02:26:38,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:26:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:26:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:26:38,624 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_dtr_rts [2023-11-12 02:26:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_dtr_rts [2023-11-12 02:26:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2023-11-12 02:26:38,625 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2023-11-12 02:26:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:26:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2023-11-12 02:26:38,625 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2023-11-12 02:26:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_chars_in_buffer [2023-11-12 02:26:38,626 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_chars_in_buffer [2023-11-12 02:26:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-12 02:26:38,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-12 02:26:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-12 02:26:38,626 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-12 02:26:38,627 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-12 02:26:38,628 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-12 02:26:38,628 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2023-11-12 02:26:38,628 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2023-11-12 02:26:38,628 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_write_room [2023-11-12 02:26:38,628 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_write_room [2023-11-12 02:26:38,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:26:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:26:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_instat_callback [2023-11-12 02:26:38,629 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_instat_callback [2023-11-12 02:26:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_stop_rx_urbs [2023-11-12 02:26:38,629 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_stop_rx_urbs [2023-11-12 02:26:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 02:26:38,630 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 02:26:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 02:26:38,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 02:26:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-12 02:26:38,630 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-12 02:26:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_port_remove [2023-11-12 02:26:38,631 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_port_remove [2023-11-12 02:26:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-12 02:26:38,631 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-12 02:26:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_calc_num_ports [2023-11-12 02:26:38,632 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_calc_num_ports [2023-11-12 02:26:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2023-11-12 02:26:38,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2023-11-12 02:26:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_tiocmset [2023-11-12 02:26:38,633 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_tiocmset [2023-11-12 02:26:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_release_urb [2023-11-12 02:26:38,633 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_release_urb [2023-11-12 02:26:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-12 02:26:38,634 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-12 02:26:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:26:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_open [2023-11-12 02:26:38,635 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_open [2023-11-12 02:26:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2023-11-12 02:26:38,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2023-11-12 02:26:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_from_anchor [2023-11-12 02:26:38,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_from_anchor [2023-11-12 02:26:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-12 02:26:38,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-12 02:26:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure sierra_suspend [2023-11-12 02:26:38,636 INFO L138 BoogieDeclarations]: Found implementation of procedure sierra_suspend [2023-11-12 02:26:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 02:26:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-12 02:26:38,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-12 02:26:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:26:38,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:26:39,202 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:26:39,223 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:26:39,505 INFO L770 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-12 02:26:43,917 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:26:43,941 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:26:43,941 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:26:43,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:43 BoogieIcfgContainer [2023-11-12 02:26:43,945 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:26:43,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:26:43,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:26:43,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:26:43,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:26:35" (1/3) ... [2023-11-12 02:26:43,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311b5a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:43, skipping insertion in model container [2023-11-12 02:26:43,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:37" (2/3) ... [2023-11-12 02:26:43,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@311b5a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:43, skipping insertion in model container [2023-11-12 02:26:43,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:43" (3/3) ... [2023-11-12 02:26:43,961 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--serial--sierra.ko-entry_point.cil.out.i [2023-11-12 02:26:43,979 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:26:43,980 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:26:44,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:26:44,085 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@61ffd362, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:26:44,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:26:44,100 INFO L276 IsEmpty]: Start isEmpty. Operand has 1027 states, 706 states have (on average 1.3427762039660056) internal successors, (948), 719 states have internal predecessors, (948), 259 states have call successors, (259), 61 states have call predecessors, (259), 60 states have return successors, (256), 254 states have call predecessors, (256), 256 states have call successors, (256) [2023-11-12 02:26:44,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-12 02:26:44,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:44,154 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:44,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:44,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:44,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1727052973, now seen corresponding path program 1 times [2023-11-12 02:26:44,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:44,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559496717] [2023-11-12 02:26:44,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:44,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:26:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:45,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:26:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:26:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:45,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:26:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:26:45,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:45,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559496717] [2023-11-12 02:26:45,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559496717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:45,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:45,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:26:45,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3886616] [2023-11-12 02:26:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:45,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:45,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:45,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:45,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:45,187 INFO L87 Difference]: Start difference. First operand has 1027 states, 706 states have (on average 1.3427762039660056) internal successors, (948), 719 states have internal predecessors, (948), 259 states have call successors, (259), 61 states have call predecessors, (259), 60 states have return successors, (256), 254 states have call predecessors, (256), 256 states have call successors, (256) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 02:26:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:50,417 INFO L93 Difference]: Finished difference Result 2223 states and 3267 transitions. [2023-11-12 02:26:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:26:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2023-11-12 02:26:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:50,448 INFO L225 Difference]: With dead ends: 2223 [2023-11-12 02:26:50,448 INFO L226 Difference]: Without dead ends: 1178 [2023-11-12 02:26:50,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:26:50,475 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 757 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:50,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 3009 Invalid, 2460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [660 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-12 02:26:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-11-12 02:26:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1046. [2023-11-12 02:26:50,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 726 states have (on average 1.3319559228650137) internal successors, (967), 734 states have internal predecessors, (967), 257 states have call successors, (257), 63 states have call predecessors, (257), 62 states have return successors, (256), 254 states have call predecessors, (256), 256 states have call successors, (256) [2023-11-12 02:26:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1480 transitions. [2023-11-12 02:26:50,645 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1480 transitions. Word has length 44 [2023-11-12 02:26:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:50,645 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1480 transitions. [2023-11-12 02:26:50,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 02:26:50,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1480 transitions. [2023-11-12 02:26:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-12 02:26:50,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:50,651 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-12 02:26:50,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:26:50,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:50,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:50,653 INFO L85 PathProgramCache]: Analyzing trace with hash -860067492, now seen corresponding path program 1 times [2023-11-12 02:26:50,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:50,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255696817] [2023-11-12 02:26:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:51,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:26:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:26:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:51,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:26:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:26:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:51,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:26:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:26:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-12 02:26:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 02:26:51,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:51,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255696817] [2023-11-12 02:26:51,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255696817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:51,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:51,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:26:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154589297] [2023-11-12 02:26:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:51,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:51,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:51,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:51,429 INFO L87 Difference]: Start difference. First operand 1046 states and 1480 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:26:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:57,257 INFO L93 Difference]: Finished difference Result 2563 states and 3677 transitions. [2023-11-12 02:26:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:26:57,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2023-11-12 02:26:57,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:57,275 INFO L225 Difference]: With dead ends: 2563 [2023-11-12 02:26:57,276 INFO L226 Difference]: Without dead ends: 1543 [2023-11-12 02:26:57,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:26:57,285 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 1393 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:57,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 2816 Invalid, 2888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [888 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-12 02:26:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-11-12 02:26:57,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1387. [2023-11-12 02:26:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1001 states have (on average 1.3166833166833167) internal successors, (1318), 1009 states have internal predecessors, (1318), 295 states have call successors, (295), 91 states have call predecessors, (295), 90 states have return successors, (294), 292 states have call predecessors, (294), 294 states have call successors, (294) [2023-11-12 02:26:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1907 transitions. [2023-11-12 02:26:57,423 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1907 transitions. Word has length 74 [2023-11-12 02:26:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:57,424 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 1907 transitions. [2023-11-12 02:26:57,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-12 02:26:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1907 transitions. [2023-11-12 02:26:57,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 02:26:57,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:57,429 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-12 02:26:57,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:26:57,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:57,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1511764288, now seen corresponding path program 1 times [2023-11-12 02:26:57,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:57,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631453856] [2023-11-12 02:26:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:57,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:26:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:57,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:26:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:26:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:26:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:26:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:26:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-12 02:26:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-12 02:26:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:58,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631453856] [2023-11-12 02:26:58,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631453856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:58,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:58,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:26:58,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827865426] [2023-11-12 02:26:58,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:58,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:58,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:58,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:58,007 INFO L87 Difference]: Start difference. First operand 1387 states and 1907 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:27:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:02,954 INFO L93 Difference]: Finished difference Result 1545 states and 2163 transitions. [2023-11-12 02:27:02,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:27:02,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 76 [2023-11-12 02:27:02,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:02,975 INFO L225 Difference]: With dead ends: 1545 [2023-11-12 02:27:02,976 INFO L226 Difference]: Without dead ends: 1542 [2023-11-12 02:27:02,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:27:02,979 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 672 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 3158 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:02,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 3158 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-12 02:27:02,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2023-11-12 02:27:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1389. [2023-11-12 02:27:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1003 states have (on average 1.3160518444666003) internal successors, (1320), 1011 states have internal predecessors, (1320), 295 states have call successors, (295), 91 states have call predecessors, (295), 90 states have return successors, (294), 292 states have call predecessors, (294), 294 states have call successors, (294) [2023-11-12 02:27:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1909 transitions. [2023-11-12 02:27:03,080 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1909 transitions. Word has length 76 [2023-11-12 02:27:03,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:03,081 INFO L495 AbstractCegarLoop]: Abstraction has 1389 states and 1909 transitions. [2023-11-12 02:27:03,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:27:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1909 transitions. [2023-11-12 02:27:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 02:27:03,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:03,084 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2023-11-12 02:27:03,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:27:03,085 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:03,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1091955669, now seen corresponding path program 1 times [2023-11-12 02:27:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:03,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071137377] [2023-11-12 02:27:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:03,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:03,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:27:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:27:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:03,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:27:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:27:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:27:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:03,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:27:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:03,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-12 02:27:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-12 02:27:03,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:03,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071137377] [2023-11-12 02:27:03,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071137377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:03,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:03,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:27:03,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664734275] [2023-11-12 02:27:03,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:03,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:27:03,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:03,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:27:03,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:27:03,982 INFO L87 Difference]: Start difference. First operand 1389 states and 1909 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:27:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:09,468 INFO L93 Difference]: Finished difference Result 3027 states and 4216 transitions. [2023-11-12 02:27:09,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:27:09,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 78 [2023-11-12 02:27:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:09,485 INFO L225 Difference]: With dead ends: 3027 [2023-11-12 02:27:09,486 INFO L226 Difference]: Without dead ends: 1664 [2023-11-12 02:27:09,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:27:09,496 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 1880 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:09,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 3450 Invalid, 2699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [840 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-12 02:27:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2023-11-12 02:27:09,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1498. [2023-11-12 02:27:09,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1077 states have (on average 1.3054781801299906) internal successors, (1406), 1086 states have internal predecessors, (1406), 315 states have call successors, (315), 106 states have call predecessors, (315), 105 states have return successors, (314), 311 states have call predecessors, (314), 314 states have call successors, (314) [2023-11-12 02:27:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2035 transitions. [2023-11-12 02:27:09,615 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2035 transitions. Word has length 78 [2023-11-12 02:27:09,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:09,616 INFO L495 AbstractCegarLoop]: Abstraction has 1498 states and 2035 transitions. [2023-11-12 02:27:09,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:27:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2035 transitions. [2023-11-12 02:27:09,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-12 02:27:09,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:09,627 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2023-11-12 02:27:09,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:27:09,628 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:09,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash -437337972, now seen corresponding path program 1 times [2023-11-12 02:27:09,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:09,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524153688] [2023-11-12 02:27:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:09,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:27:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:27:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:27:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:27:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:27:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:27:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-12 02:27:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:27:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-12 02:27:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-12 02:27:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-12 02:27:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:27:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-12 02:27:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-12 02:27:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-12 02:27:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:27:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-12 02:27:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-12 02:27:10,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:10,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524153688] [2023-11-12 02:27:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524153688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:10,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:10,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:27:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638185392] [2023-11-12 02:27:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:10,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:27:10,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:27:10,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:27:10,559 INFO L87 Difference]: Start difference. First operand 1498 states and 2035 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 02:27:17,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:17,649 INFO L93 Difference]: Finished difference Result 3554 states and 4919 transitions. [2023-11-12 02:27:17,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:27:17,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2023-11-12 02:27:17,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:17,668 INFO L225 Difference]: With dead ends: 3554 [2023-11-12 02:27:17,668 INFO L226 Difference]: Without dead ends: 2082 [2023-11-12 02:27:17,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:27:17,676 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 1936 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 1529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 4848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1529 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:17,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2020 Valid, 3137 Invalid, 4848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1529 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-12 02:27:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2023-11-12 02:27:17,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1835. [2023-11-12 02:27:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1835 states, 1348 states have (on average 1.2974777448071217) internal successors, (1749), 1357 states have internal predecessors, (1749), 353 states have call successors, (353), 134 states have call predecessors, (353), 133 states have return successors, (352), 349 states have call predecessors, (352), 352 states have call successors, (352) [2023-11-12 02:27:17,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2454 transitions. [2023-11-12 02:27:17,814 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2454 transitions. Word has length 155 [2023-11-12 02:27:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:17,816 INFO L495 AbstractCegarLoop]: Abstraction has 1835 states and 2454 transitions. [2023-11-12 02:27:17,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-12 02:27:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2454 transitions. [2023-11-12 02:27:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-12 02:27:17,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:17,830 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 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] [2023-11-12 02:27:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:27:17,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:17,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash 617176394, now seen corresponding path program 1 times [2023-11-12 02:27:17,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:17,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310811278] [2023-11-12 02:27:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:17,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-12 02:27:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-12 02:27:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-12 02:27:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:27:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:27:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:27:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-12 02:27:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-12 02:27:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-12 02:27:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-12 02:27:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:27:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-12 02:27:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-12 02:27:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:27:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-12 02:27:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat