/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:07:45,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:07:45,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:07:45,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:07:45,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:07:45,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:07:45,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:07:45,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:07:45,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:07:45,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:07:45,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:07:45,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:07:45,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:07:45,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:07:45,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:07:45,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:07:45,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:07:45,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:07:45,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:07:45,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:07:45,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:07:45,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:07:45,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:07:45,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:07:45,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:07:45,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:07:45,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:07:45,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:07:45,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:07:45,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:07:45,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:07:45,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:07:45,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:07:45,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:07:45,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:07:45,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:07:45,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:07:45,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:07:45,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:07:45,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:07:45,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:07:45,529 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:07:45,558 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:07:45,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:07:45,558 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:07:45,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:07:45,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:07:45,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:07:45,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:07:45,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:07:45,561 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:07:45,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:07:45,562 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:07:45,562 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:07:45,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:07:45,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:07:45,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:07:45,563 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:07:45,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:07:45,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:07:45,564 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:07:45,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:07:45,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:07:45,564 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:07:45,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:07:45,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:07:45,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:07:45,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:07:45,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:07:45,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:07:45,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:07:45,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:07:45,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:07:45,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:07:45,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:07:45,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:07:45,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:07:46,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:07:46,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:07:46,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:07:46,051 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:07:46,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2022-10-15 21:07:46,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2acd4624/0fa66797ff51408fa3ec36bb991b2969/FLAG01aa7a3ef [2022-10-15 21:07:47,321 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:07:47,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2022-10-15 21:07:47,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2acd4624/0fa66797ff51408fa3ec36bb991b2969/FLAG01aa7a3ef [2022-10-15 21:07:47,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2acd4624/0fa66797ff51408fa3ec36bb991b2969 [2022-10-15 21:07:47,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:07:47,724 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:07:47,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:07:47,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:07:47,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:07:47,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:07:47" (1/1) ... [2022-10-15 21:07:47,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5401bce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:47, skipping insertion in model container [2022-10-15 21:07:47,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:07:47" (1/1) ... [2022-10-15 21:07:47,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:07:47,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:07:49,230 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i[228448,228461] [2022-10-15 21:07:49,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:07:49,351 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:07:49,737 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i[228448,228461] [2022-10-15 21:07:49,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:07:49,857 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:07:49,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49 WrapperNode [2022-10-15 21:07:49,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:07:49,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:07:49,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:07:49,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:07:49,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,134 INFO L138 Inliner]: procedures = 188, calls = 583, calls flagged for inlining = 72, calls inlined = 47, statements flattened = 1214 [2022-10-15 21:07:50,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:07:50,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:07:50,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:07:50,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:07:50,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,283 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:07:50,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:07:50,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:07:50,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:07:50,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (1/1) ... [2022-10-15 21:07:50,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:07:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:07:50,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 21:07:50,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 21:07:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-15 21:07:50,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-15 21:07:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure uspace_ring_map [2022-10-15 21:07:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure uspace_ring_map [2022-10-15 21:07:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unmap_user_pages [2022-10-15 21:07:50,476 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unmap_user_pages [2022-10-15 21:07:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:07:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure hash_64 [2022-10-15 21:07:50,476 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_64 [2022-10-15 21:07:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_release_buffers [2022-10-15 21:07:50,476 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_release_buffers [2022-10-15 21:07:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:07:50,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:07:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-10-15 21:07:50,477 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-10-15 21:07:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_write [2022-10-15 21:07:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_write [2022-10-15 21:07:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:07:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:07:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:07:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:07:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:07:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_open [2022-10-15 21:07:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_open [2022-10-15 21:07:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_destroy [2022-10-15 21:07:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_destroy [2022-10-15 21:07:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:07:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_to_host [2022-10-15 21:07:50,480 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_to_host [2022-10-15 21:07:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-15 21:07:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-15 21:07:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:07:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_idx_inc [2022-10-15 21:07:50,481 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_idx_inc [2022-10-15 21:07:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:07:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:07:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_head_event [2022-10-15 21:07:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_head_event [2022-10-15 21:07:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-10-15 21:07:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-10-15 21:07:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-10-15 21:07:50,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-10-15 21:07:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:07:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-15 21:07:50,483 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-15 21:07:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-10-15 21:07:50,483 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-10-15 21:07:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:07:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:07:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_exit [2022-10-15 21:07:50,484 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_exit [2022-10-15 21:07:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tgt_cmd_destroy [2022-10-15 21:07:50,485 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tgt_cmd_destroy [2022-10-15 21:07:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_ring_init [2022-10-15 21:07:50,485 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_ring_init [2022-10-15 21:07:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-10-15 21:07:50,486 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-10-15 21:07:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_free [2022-10-15 21:07:50,487 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_free [2022-10-15 21:07:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_poll [2022-10-15 21:07:50,487 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_poll [2022-10-15 21:07:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-15 21:07:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-15 21:07:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_lookup [2022-10-15 21:07:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_lookup [2022-10-15 21:07:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure tgt_mmap [2022-10-15 21:07:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure tgt_mmap [2022-10-15 21:07:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:07:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-15 21:07:50,491 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-15 21:07:50,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:07:50,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:07:50,998 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:07:51,002 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:07:52,191 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:07:52,205 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:07:52,205 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 21:07:52,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:07:52 BoogieIcfgContainer [2022-10-15 21:07:52,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:07:52,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:07:52,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:07:52,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:07:52,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:07:47" (1/3) ... [2022-10-15 21:07:52,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69450a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:07:52, skipping insertion in model container [2022-10-15 21:07:52,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:07:49" (2/3) ... [2022-10-15 21:07:52,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69450a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:07:52, skipping insertion in model container [2022-10-15 21:07:52,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:07:52" (3/3) ... [2022-10-15 21:07:52,220 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--scsi--scsi_tgt.ko-main.cil.out.i [2022-10-15 21:07:52,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:07:52,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-15 21:07:52,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:07:52,325 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=FINITE_AUTOMATA, 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;@1c4d0955, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:07:52,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-15 21:07:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 290 states have (on average 1.3482758620689654) internal successors, (391), 307 states have internal predecessors, (391), 68 states have call successors, (68), 30 states have call predecessors, (68), 30 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-10-15 21:07:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 21:07:52,345 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:07:52,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:07:52,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:07:52,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:07:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1173149826, now seen corresponding path program 1 times [2022-10-15 21:07:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:07:52,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701895811] [2022-10-15 21:07:52,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:52,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:07:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:07:52,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:07:52,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701895811] [2022-10-15 21:07:52,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701895811] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:07:52,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:07:52,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:07:52,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550178512] [2022-10-15 21:07:52,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:07:52,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:07:52,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:07:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:07:52,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:07:52,956 INFO L87 Difference]: Start difference. First operand has 399 states, 290 states have (on average 1.3482758620689654) internal successors, (391), 307 states have internal predecessors, (391), 68 states have call successors, (68), 30 states have call predecessors, (68), 30 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:07:53,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:07:53,154 INFO L93 Difference]: Finished difference Result 891 states and 1192 transitions. [2022-10-15 21:07:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:07:53,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 21:07:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:07:53,177 INFO L225 Difference]: With dead ends: 891 [2022-10-15 21:07:53,178 INFO L226 Difference]: Without dead ends: 463 [2022-10-15 21:07:53,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:07:53,199 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 125 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:07:53,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1003 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:07:53,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-10-15 21:07:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 458. [2022-10-15 21:07:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 337 states have (on average 1.3382789317507418) internal successors, (451), 353 states have internal predecessors, (451), 75 states have call successors, (75), 36 states have call predecessors, (75), 36 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-10-15 21:07:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 599 transitions. [2022-10-15 21:07:53,323 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 599 transitions. Word has length 15 [2022-10-15 21:07:53,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:07:53,324 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 599 transitions. [2022-10-15 21:07:53,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 21:07:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 599 transitions. [2022-10-15 21:07:53,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-15 21:07:53,327 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:07:53,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:07:53,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:07:53,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:07:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:07:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash -512715558, now seen corresponding path program 1 times [2022-10-15 21:07:53,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:07:53,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041015836] [2022-10-15 21:07:53,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:53,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:07:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-15 21:07:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:07:53,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:07:53,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041015836] [2022-10-15 21:07:53,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041015836] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:07:53,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:07:53,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:07:53,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861007682] [2022-10-15 21:07:53,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:07:53,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:07:53,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:07:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:07:53,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:07:53,588 INFO L87 Difference]: Start difference. First operand 458 states and 599 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 21:07:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:07:53,710 INFO L93 Difference]: Finished difference Result 1264 states and 1654 transitions. [2022-10-15 21:07:53,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:07:53,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-10-15 21:07:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:07:53,720 INFO L225 Difference]: With dead ends: 1264 [2022-10-15 21:07:53,720 INFO L226 Difference]: Without dead ends: 809 [2022-10-15 21:07:53,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 21:07:53,725 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 476 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:07:53,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1291 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:07:53,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-10-15 21:07:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 786. [2022-10-15 21:07:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 590 states have (on average 1.3338983050847457) internal successors, (787), 607 states have internal predecessors, (787), 124 states have call successors, (124), 62 states have call predecessors, (124), 62 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-10-15 21:07:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1034 transitions. [2022-10-15 21:07:53,806 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1034 transitions. Word has length 20 [2022-10-15 21:07:53,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:07:53,807 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 1034 transitions. [2022-10-15 21:07:53,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-15 21:07:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1034 transitions. [2022-10-15 21:07:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-15 21:07:53,809 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:07:53,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:07:53,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:07:53,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting tgt_ring_initErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:07:53,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:07:53,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1043772841, now seen corresponding path program 1 times [2022-10-15 21:07:53,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:07:53,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572877136] [2022-10-15 21:07:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:07:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:07:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:54,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 21:07:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:54,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:07:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:07:54,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:07:54,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572877136] [2022-10-15 21:07:54,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572877136] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:07:54,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:07:54,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:07:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729070290] [2022-10-15 21:07:54,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:07:54,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:07:54,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:07:54,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:07:54,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:07:54,030 INFO L87 Difference]: Start difference. First operand 786 states and 1034 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:07:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:07:54,809 INFO L93 Difference]: Finished difference Result 1839 states and 2486 transitions. [2022-10-15 21:07:54,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:07:54,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-10-15 21:07:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:07:54,820 INFO L225 Difference]: With dead ends: 1839 [2022-10-15 21:07:54,820 INFO L226 Difference]: Without dead ends: 1056 [2022-10-15 21:07:54,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:07:54,825 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 246 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:07:54,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1017 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:07:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-10-15 21:07:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 798. [2022-10-15 21:07:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 602 states have (on average 1.330564784053156) internal successors, (801), 619 states have internal predecessors, (801), 124 states have call successors, (124), 62 states have call predecessors, (124), 62 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-10-15 21:07:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1048 transitions. [2022-10-15 21:07:54,912 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1048 transitions. Word has length 36 [2022-10-15 21:07:54,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:07:54,913 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1048 transitions. [2022-10-15 21:07:54,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:07:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1048 transitions. [2022-10-15 21:07:54,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-15 21:07:54,915 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:07:54,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:07:54,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:07:54,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:07:54,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:07:54,917 INFO L85 PathProgramCache]: Analyzing trace with hash -869447838, now seen corresponding path program 1 times [2022-10-15 21:07:54,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:07:54,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647692972] [2022-10-15 21:07:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:54,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:07:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:07:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:55,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 21:07:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:07:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:07:55,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647692972] [2022-10-15 21:07:55,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647692972] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:07:55,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:07:55,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:07:55,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643407752] [2022-10-15 21:07:55,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:07:55,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:07:55,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:07:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:07:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:07:55,109 INFO L87 Difference]: Start difference. First operand 798 states and 1048 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:07:55,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:07:55,841 INFO L93 Difference]: Finished difference Result 1853 states and 2492 transitions. [2022-10-15 21:07:55,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:07:55,842 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-10-15 21:07:55,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:07:55,853 INFO L225 Difference]: With dead ends: 1853 [2022-10-15 21:07:55,853 INFO L226 Difference]: Without dead ends: 1052 [2022-10-15 21:07:55,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:07:55,864 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 246 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:07:55,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1317 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:07:55,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-10-15 21:07:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 798. [2022-10-15 21:07:55,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 602 states have (on average 1.3272425249169435) internal successors, (799), 619 states have internal predecessors, (799), 124 states have call successors, (124), 62 states have call predecessors, (124), 62 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-10-15 21:07:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1046 transitions. [2022-10-15 21:07:55,945 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1046 transitions. Word has length 38 [2022-10-15 21:07:55,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:07:55,946 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1046 transitions. [2022-10-15 21:07:55,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 21:07:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1046 transitions. [2022-10-15 21:07:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 21:07:55,954 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:07:55,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:07:55,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:07:55,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting tgt_ring_initErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:07:55,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:07:55,956 INFO L85 PathProgramCache]: Analyzing trace with hash -954356481, now seen corresponding path program 1 times [2022-10-15 21:07:55,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:07:55,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345955303] [2022-10-15 21:07:55,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:55,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:07:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:56,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:07:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 21:07:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:07:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:07:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:07:56,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345955303] [2022-10-15 21:07:56,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345955303] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:07:56,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593397901] [2022-10-15 21:07:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:56,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:07:56,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:07:56,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:07:56,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:07:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:56,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:07:56,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:07:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:07:56,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:07:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:07:56,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593397901] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:07:56,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:07:56,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-15 21:07:56,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014353853] [2022-10-15 21:07:56,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:07:56,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:07:56,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:07:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:07:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:07:56,754 INFO L87 Difference]: Start difference. First operand 798 states and 1046 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:07:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:07:57,609 INFO L93 Difference]: Finished difference Result 1086 states and 1489 transitions. [2022-10-15 21:07:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:07:57,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-10-15 21:07:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:07:57,621 INFO L225 Difference]: With dead ends: 1086 [2022-10-15 21:07:57,621 INFO L226 Difference]: Without dead ends: 1085 [2022-10-15 21:07:57,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:07:57,628 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 269 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:07:57,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1316 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 21:07:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-10-15 21:07:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 797. [2022-10-15 21:07:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 602 states have (on average 1.323920265780731) internal successors, (797), 618 states have internal predecessors, (797), 124 states have call successors, (124), 62 states have call predecessors, (124), 62 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-10-15 21:07:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1044 transitions. [2022-10-15 21:07:57,708 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1044 transitions. Word has length 42 [2022-10-15 21:07:57,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:07:57,714 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1044 transitions. [2022-10-15 21:07:57,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:07:57,714 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1044 transitions. [2022-10-15 21:07:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-15 21:07:57,718 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:07:57,719 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:07:57,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 21:07:57,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:07:57,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting tgt_ring_initErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:07:57,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:07:57,936 INFO L85 PathProgramCache]: Analyzing trace with hash 479720556, now seen corresponding path program 1 times [2022-10-15 21:07:57,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:07:57,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969184664] [2022-10-15 21:07:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:57,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:07:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:58,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:07:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:58,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 21:07:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:07:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:07:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:07:58,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969184664] [2022-10-15 21:07:58,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969184664] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:07:58,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182608864] [2022-10-15 21:07:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:58,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:07:58,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:07:58,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:07:58,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:07:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:58,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:07:58,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:07:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 21:07:58,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:07:58,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182608864] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:07:58,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:07:58,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-15 21:07:58,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765400632] [2022-10-15 21:07:58,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:07:58,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:07:58,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:07:58,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:07:58,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:07:58,468 INFO L87 Difference]: Start difference. First operand 797 states and 1044 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:07:58,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:07:58,537 INFO L93 Difference]: Finished difference Result 801 states and 1050 transitions. [2022-10-15 21:07:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:07:58,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-10-15 21:07:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:07:58,545 INFO L225 Difference]: With dead ends: 801 [2022-10-15 21:07:58,545 INFO L226 Difference]: Without dead ends: 800 [2022-10-15 21:07:58,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:07:58,547 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 8 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:07:58,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 977 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:07:58,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-10-15 21:07:58,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 786. [2022-10-15 21:07:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 592 states have (on average 1.322635135135135) internal successors, (783), 607 states have internal predecessors, (783), 124 states have call successors, (124), 62 states have call predecessors, (124), 62 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-10-15 21:07:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1030 transitions. [2022-10-15 21:07:58,634 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1030 transitions. Word has length 43 [2022-10-15 21:07:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:07:58,635 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 1030 transitions. [2022-10-15 21:07:58,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:07:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1030 transitions. [2022-10-15 21:07:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 21:07:58,636 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:07:58,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:07:58,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 21:07:58,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-15 21:07:58,851 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:07:58,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:07:58,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1051759022, now seen corresponding path program 1 times [2022-10-15 21:07:58,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:07:58,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527545025] [2022-10-15 21:07:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:58,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:07:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:07:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:58,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:07:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:59,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:07:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:07:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 21:07:59,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:07:59,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527545025] [2022-10-15 21:07:59,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527545025] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:07:59,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:07:59,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:07:59,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385850035] [2022-10-15 21:07:59,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:07:59,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:07:59,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:07:59,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:07:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:07:59,012 INFO L87 Difference]: Start difference. First operand 786 states and 1030 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:07:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:07:59,692 INFO L93 Difference]: Finished difference Result 1838 states and 2476 transitions. [2022-10-15 21:07:59,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:07:59,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-10-15 21:07:59,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:07:59,702 INFO L225 Difference]: With dead ends: 1838 [2022-10-15 21:07:59,703 INFO L226 Difference]: Without dead ends: 1055 [2022-10-15 21:07:59,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:07:59,711 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 248 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:07:59,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1012 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 21:07:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2022-10-15 21:07:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 801. [2022-10-15 21:07:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 607 states have (on average 1.314662273476112) internal successors, (798), 622 states have internal predecessors, (798), 124 states have call successors, (124), 62 states have call predecessors, (124), 62 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-10-15 21:07:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1045 transitions. [2022-10-15 21:07:59,784 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1045 transitions. Word has length 44 [2022-10-15 21:07:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:07:59,787 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 1045 transitions. [2022-10-15 21:07:59,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:07:59,787 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1045 transitions. [2022-10-15 21:07:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-15 21:07:59,790 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:07:59,790 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:07:59,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 21:07:59,791 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:07:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:07:59,791 INFO L85 PathProgramCache]: Analyzing trace with hash 162134458, now seen corresponding path program 1 times [2022-10-15 21:07:59,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:07:59,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213381245] [2022-10-15 21:07:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:07:59,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:07:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:00,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:08:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 21:08:00,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:00,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213381245] [2022-10-15 21:08:00,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213381245] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:00,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030868419] [2022-10-15 21:08:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:00,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:00,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:00,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 21:08:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:00,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 21:08:00,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:08:00,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:08:00,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030868419] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:00,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:08:00,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-10-15 21:08:00,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479103570] [2022-10-15 21:08:00,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:00,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:08:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:08:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:08:00,327 INFO L87 Difference]: Start difference. First operand 801 states and 1045 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 21:08:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:00,430 INFO L93 Difference]: Finished difference Result 1609 states and 2101 transitions. [2022-10-15 21:08:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:08:00,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2022-10-15 21:08:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:00,437 INFO L225 Difference]: With dead ends: 1609 [2022-10-15 21:08:00,437 INFO L226 Difference]: Without dead ends: 801 [2022-10-15 21:08:00,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:08:00,441 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 6 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:00,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1948 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:08:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-10-15 21:08:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 801. [2022-10-15 21:08:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 607 states have (on average 1.3113673805601318) internal successors, (796), 620 states have internal predecessors, (796), 124 states have call successors, (124), 62 states have call predecessors, (124), 62 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-10-15 21:08:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1043 transitions. [2022-10-15 21:08:00,498 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1043 transitions. Word has length 49 [2022-10-15 21:08:00,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:00,499 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 1043 transitions. [2022-10-15 21:08:00,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-15 21:08:00,499 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1043 transitions. [2022-10-15 21:08:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-15 21:08:00,500 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:00,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:00,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 21:08:00,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:00,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1217130583, now seen corresponding path program 1 times [2022-10-15 21:08:00,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:00,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524681404] [2022-10-15 21:08:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:00,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:00,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:00,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:01,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:01,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 21:08:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:01,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-15 21:08:01,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:01,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524681404] [2022-10-15 21:08:01,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524681404] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:01,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121998543] [2022-10-15 21:08:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:01,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:01,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:01,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:01,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 21:08:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:01,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 21:08:01,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:08:01,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:08:01,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121998543] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:01,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:08:01,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-10-15 21:08:01,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339415492] [2022-10-15 21:08:01,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:01,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:08:01,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:01,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:08:01,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:08:01,486 INFO L87 Difference]: Start difference. First operand 801 states and 1043 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:08:01,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:01,582 INFO L93 Difference]: Finished difference Result 1773 states and 2357 transitions. [2022-10-15 21:08:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:08:01,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-10-15 21:08:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:01,590 INFO L225 Difference]: With dead ends: 1773 [2022-10-15 21:08:01,591 INFO L226 Difference]: Without dead ends: 975 [2022-10-15 21:08:01,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:08:01,596 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 89 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:01,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 2236 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:08:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-10-15 21:08:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 809. [2022-10-15 21:08:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 613 states have (on average 1.3083197389885808) internal successors, (802), 626 states have internal predecessors, (802), 124 states have call successors, (124), 62 states have call predecessors, (124), 64 states have return successors, (127), 125 states have call predecessors, (127), 123 states have call successors, (127) [2022-10-15 21:08:01,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1053 transitions. [2022-10-15 21:08:01,658 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1053 transitions. Word has length 70 [2022-10-15 21:08:01,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:01,659 INFO L495 AbstractCegarLoop]: Abstraction has 809 states and 1053 transitions. [2022-10-15 21:08:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:08:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1053 transitions. [2022-10-15 21:08:01,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-15 21:08:01,660 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:01,661 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-15 21:08:01,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 21:08:01,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:01,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:01,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash -820577089, now seen corresponding path program 1 times [2022-10-15 21:08:01,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:01,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530222324] [2022-10-15 21:08:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:01,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:02,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:08:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 21:08:02,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:02,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530222324] [2022-10-15 21:08:02,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530222324] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:02,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408685754] [2022-10-15 21:08:02,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:02,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:02,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:02,171 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:02,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 21:08:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:02,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-15 21:08:02,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:08:02,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:08:02,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408685754] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:02,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:08:02,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-10-15 21:08:02,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209222433] [2022-10-15 21:08:02,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:02,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 21:08:02,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:02,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 21:08:02,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:08:02,513 INFO L87 Difference]: Start difference. First operand 809 states and 1053 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:08:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:02,709 INFO L93 Difference]: Finished difference Result 1781 states and 2365 transitions. [2022-10-15 21:08:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:08:02,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2022-10-15 21:08:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:02,718 INFO L225 Difference]: With dead ends: 1781 [2022-10-15 21:08:02,718 INFO L226 Difference]: Without dead ends: 975 [2022-10-15 21:08:02,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-10-15 21:08:02,723 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 257 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:02,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 3257 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:08:02,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-10-15 21:08:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 813. [2022-10-15 21:08:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 617 states have (on average 1.306320907617504) internal successors, (806), 630 states have internal predecessors, (806), 124 states have call successors, (124), 62 states have call predecessors, (124), 64 states have return successors, (127), 125 states have call predecessors, (127), 123 states have call successors, (127) [2022-10-15 21:08:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1057 transitions. [2022-10-15 21:08:02,796 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1057 transitions. Word has length 66 [2022-10-15 21:08:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:02,796 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1057 transitions. [2022-10-15 21:08:02,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:08:02,797 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1057 transitions. [2022-10-15 21:08:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-15 21:08:02,798 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:02,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:02,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-15 21:08:03,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-15 21:08:03,013 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash 294074308, now seen corresponding path program 1 times [2022-10-15 21:08:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:03,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978278539] [2022-10-15 21:08:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:03,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 21:08:03,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:03,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978278539] [2022-10-15 21:08:03,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978278539] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:03,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111145042] [2022-10-15 21:08:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:03,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:03,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:03,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:03,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 21:08:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:03,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 886 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:08:03,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 21:08:03,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:08:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 21:08:03,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111145042] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:08:03,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:08:03,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2022-10-15 21:08:03,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182904825] [2022-10-15 21:08:03,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:08:03,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 21:08:03,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:03,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 21:08:03,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:08:03,667 INFO L87 Difference]: Start difference. First operand 813 states and 1057 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:04,809 INFO L93 Difference]: Finished difference Result 1113 states and 1516 transitions. [2022-10-15 21:08:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:08:04,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 74 [2022-10-15 21:08:04,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:04,819 INFO L225 Difference]: With dead ends: 1113 [2022-10-15 21:08:04,820 INFO L226 Difference]: Without dead ends: 1112 [2022-10-15 21:08:04,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-10-15 21:08:04,822 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 265 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:04,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1756 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-15 21:08:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-10-15 21:08:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 812. [2022-10-15 21:08:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 617 states have (on average 1.3014586709886549) internal successors, (803), 629 states have internal predecessors, (803), 124 states have call successors, (124), 62 states have call predecessors, (124), 64 states have return successors, (127), 125 states have call predecessors, (127), 123 states have call successors, (127) [2022-10-15 21:08:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1054 transitions. [2022-10-15 21:08:04,929 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1054 transitions. Word has length 74 [2022-10-15 21:08:04,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:04,931 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 1054 transitions. [2022-10-15 21:08:04,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1054 transitions. [2022-10-15 21:08:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-15 21:08:04,932 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:04,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:04,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 21:08:05,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:05,142 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 526369004, now seen corresponding path program 1 times [2022-10-15 21:08:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:05,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912926561] [2022-10-15 21:08:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:05,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 21:08:05,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:05,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912926561] [2022-10-15 21:08:05,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912926561] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:05,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290752149] [2022-10-15 21:08:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:05,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:05,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:05,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:05,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 21:08:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:05,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:08:05,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 21:08:05,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:08:05,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290752149] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:05,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:08:05,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-15 21:08:05,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998066569] [2022-10-15 21:08:05,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:05,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:08:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:08:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:08:05,757 INFO L87 Difference]: Start difference. First operand 812 states and 1054 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:05,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:05,828 INFO L93 Difference]: Finished difference Result 812 states and 1054 transitions. [2022-10-15 21:08:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:08:05,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 75 [2022-10-15 21:08:05,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:05,834 INFO L225 Difference]: With dead ends: 812 [2022-10-15 21:08:05,834 INFO L226 Difference]: Without dead ends: 791 [2022-10-15 21:08:05,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:08:05,836 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 2 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:05,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1445 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:08:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-10-15 21:08:05,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 783. [2022-10-15 21:08:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 594 states have (on average 1.303030303030303) internal successors, (774), 604 states have internal predecessors, (774), 121 states have call successors, (121), 60 states have call predecessors, (121), 62 states have return successors, (125), 123 states have call predecessors, (125), 121 states have call successors, (125) [2022-10-15 21:08:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1020 transitions. [2022-10-15 21:08:05,905 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1020 transitions. Word has length 75 [2022-10-15 21:08:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:05,906 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1020 transitions. [2022-10-15 21:08:05,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1020 transitions. [2022-10-15 21:08:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-10-15 21:08:05,908 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:05,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:05,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 21:08:06,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:06,123 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:06,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:06,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1353011143, now seen corresponding path program 1 times [2022-10-15 21:08:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:06,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332795001] [2022-10-15 21:08:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:06,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:06,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 21:08:06,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:06,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332795001] [2022-10-15 21:08:06,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332795001] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:06,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:08:06,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:08:06,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498429851] [2022-10-15 21:08:06,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:06,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:08:06,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:08:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:08:06,368 INFO L87 Difference]: Start difference. First operand 783 states and 1020 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:07,781 INFO L93 Difference]: Finished difference Result 2735 states and 3682 transitions. [2022-10-15 21:08:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:08:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 83 [2022-10-15 21:08:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:07,798 INFO L225 Difference]: With dead ends: 2735 [2022-10-15 21:08:07,798 INFO L226 Difference]: Without dead ends: 1955 [2022-10-15 21:08:07,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:08:07,804 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 1159 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:07,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 1190 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 21:08:07,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2022-10-15 21:08:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1414. [2022-10-15 21:08:07,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1073 states have (on average 1.2861136999068035) internal successors, (1380), 1087 states have internal predecessors, (1380), 219 states have call successors, (219), 113 states have call predecessors, (219), 116 states have return successors, (225), 222 states have call predecessors, (225), 219 states have call successors, (225) [2022-10-15 21:08:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1824 transitions. [2022-10-15 21:08:07,966 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1824 transitions. Word has length 83 [2022-10-15 21:08:07,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:07,967 INFO L495 AbstractCegarLoop]: Abstraction has 1414 states and 1824 transitions. [2022-10-15 21:08:07,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:07,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1824 transitions. [2022-10-15 21:08:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-15 21:08:07,969 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:07,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:07,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 21:08:07,970 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:07,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:07,971 INFO L85 PathProgramCache]: Analyzing trace with hash 230274100, now seen corresponding path program 1 times [2022-10-15 21:08:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:07,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649834762] [2022-10-15 21:08:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:07,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:08,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:08,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:08,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 21:08:08,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:08,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649834762] [2022-10-15 21:08:08,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649834762] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:08,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:08:08,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:08:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296960593] [2022-10-15 21:08:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:08,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:08:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:08:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:08:08,247 INFO L87 Difference]: Start difference. First operand 1414 states and 1824 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:09,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:09,176 INFO L93 Difference]: Finished difference Result 3399 states and 4545 transitions. [2022-10-15 21:08:09,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:08:09,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 88 [2022-10-15 21:08:09,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:09,194 INFO L225 Difference]: With dead ends: 3399 [2022-10-15 21:08:09,194 INFO L226 Difference]: Without dead ends: 1988 [2022-10-15 21:08:09,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:08:09,203 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 254 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:09,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1169 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 21:08:09,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2022-10-15 21:08:09,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1442. [2022-10-15 21:08:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1101 states have (on average 1.2824704813805632) internal successors, (1412), 1115 states have internal predecessors, (1412), 219 states have call successors, (219), 113 states have call predecessors, (219), 116 states have return successors, (225), 222 states have call predecessors, (225), 219 states have call successors, (225) [2022-10-15 21:08:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 1856 transitions. [2022-10-15 21:08:09,349 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 1856 transitions. Word has length 88 [2022-10-15 21:08:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:09,350 INFO L495 AbstractCegarLoop]: Abstraction has 1442 states and 1856 transitions. [2022-10-15 21:08:09,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:09,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 1856 transitions. [2022-10-15 21:08:09,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-10-15 21:08:09,352 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:09,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:09,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-15 21:08:09,354 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:09,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1224091502, now seen corresponding path program 1 times [2022-10-15 21:08:09,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:09,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145296077] [2022-10-15 21:08:09,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:09,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:09,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-15 21:08:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 21:08:09,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:09,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145296077] [2022-10-15 21:08:09,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145296077] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:09,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:08:09,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:08:09,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130835449] [2022-10-15 21:08:09,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:08:09,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:08:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:08:09,749 INFO L87 Difference]: Start difference. First operand 1442 states and 1856 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 21:08:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:11,577 INFO L93 Difference]: Finished difference Result 3032 states and 4080 transitions. [2022-10-15 21:08:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:08:11,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 87 [2022-10-15 21:08:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:11,603 INFO L225 Difference]: With dead ends: 3032 [2022-10-15 21:08:11,604 INFO L226 Difference]: Without dead ends: 3030 [2022-10-15 21:08:11,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:08:11,607 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 961 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:11,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1414 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-15 21:08:11,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2022-10-15 21:08:11,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2210. [2022-10-15 21:08:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 1692 states have (on average 1.274822695035461) internal successors, (2157), 1711 states have internal predecessors, (2157), 334 states have call successors, (334), 173 states have call predecessors, (334), 178 states have return successors, (344), 339 states have call predecessors, (344), 334 states have call successors, (344) [2022-10-15 21:08:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 2835 transitions. [2022-10-15 21:08:11,816 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 2835 transitions. Word has length 87 [2022-10-15 21:08:11,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:11,816 INFO L495 AbstractCegarLoop]: Abstraction has 2210 states and 2835 transitions. [2022-10-15 21:08:11,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 21:08:11,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 2835 transitions. [2022-10-15 21:08:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-15 21:08:11,819 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:11,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-15 21:08:11,820 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1554180391, now seen corresponding path program 1 times [2022-10-15 21:08:11,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:11,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734259410] [2022-10-15 21:08:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:11,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:12,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:12,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 21:08:12,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:12,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734259410] [2022-10-15 21:08:12,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734259410] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:12,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517023421] [2022-10-15 21:08:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:12,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:12,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:12,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:12,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 21:08:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:12,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 21:08:12,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-15 21:08:12,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:08:12,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517023421] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:12,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:08:12,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-10-15 21:08:12,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905383896] [2022-10-15 21:08:12,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:12,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:08:12,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:12,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:08:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:08:12,547 INFO L87 Difference]: Start difference. First operand 2210 states and 2835 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:12,757 INFO L93 Difference]: Finished difference Result 4716 states and 6139 transitions. [2022-10-15 21:08:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:08:12,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 95 [2022-10-15 21:08:12,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:12,780 INFO L225 Difference]: With dead ends: 4716 [2022-10-15 21:08:12,780 INFO L226 Difference]: Without dead ends: 2606 [2022-10-15 21:08:12,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:08:12,790 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 88 mSDsluCounter, 1646 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:12,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 2232 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:08:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-10-15 21:08:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2220. [2022-10-15 21:08:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2220 states, 1702 states have (on average 1.273207990599295) internal successors, (2167), 1716 states have internal predecessors, (2167), 334 states have call successors, (334), 173 states have call predecessors, (334), 178 states have return successors, (344), 344 states have call predecessors, (344), 334 states have call successors, (344) [2022-10-15 21:08:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2220 states to 2220 states and 2845 transitions. [2022-10-15 21:08:13,016 INFO L78 Accepts]: Start accepts. Automaton has 2220 states and 2845 transitions. Word has length 95 [2022-10-15 21:08:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:13,017 INFO L495 AbstractCegarLoop]: Abstraction has 2220 states and 2845 transitions. [2022-10-15 21:08:13,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2220 states and 2845 transitions. [2022-10-15 21:08:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-15 21:08:13,023 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:13,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:13,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 21:08:13,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-15 21:08:13,240 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:13,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1120655124, now seen corresponding path program 1 times [2022-10-15 21:08:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:13,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172600764] [2022-10-15 21:08:13,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:13,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:13,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:13,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:13,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:13,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172600764] [2022-10-15 21:08:13,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172600764] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:13,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358614361] [2022-10-15 21:08:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:13,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:13,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:13,588 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:13,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 21:08:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:13,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:08:13,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:13,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:08:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:14,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358614361] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:08:14,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:08:14,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2022-10-15 21:08:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95849473] [2022-10-15 21:08:14,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:08:14,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 21:08:14,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:14,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 21:08:14,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:08:14,039 INFO L87 Difference]: Start difference. First operand 2220 states and 2845 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:15,204 INFO L93 Difference]: Finished difference Result 3136 states and 4238 transitions. [2022-10-15 21:08:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:08:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 99 [2022-10-15 21:08:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:15,231 INFO L225 Difference]: With dead ends: 3136 [2022-10-15 21:08:15,232 INFO L226 Difference]: Without dead ends: 3135 [2022-10-15 21:08:15,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-10-15 21:08:15,235 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 292 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:15,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1439 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 21:08:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2022-10-15 21:08:15,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 2219. [2022-10-15 21:08:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 1702 states have (on average 1.2696827262044654) internal successors, (2161), 1715 states have internal predecessors, (2161), 334 states have call successors, (334), 173 states have call predecessors, (334), 178 states have return successors, (344), 344 states have call predecessors, (344), 334 states have call successors, (344) [2022-10-15 21:08:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2839 transitions. [2022-10-15 21:08:15,456 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2839 transitions. Word has length 99 [2022-10-15 21:08:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:15,456 INFO L495 AbstractCegarLoop]: Abstraction has 2219 states and 2839 transitions. [2022-10-15 21:08:15,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2839 transitions. [2022-10-15 21:08:15,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-15 21:08:15,459 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:15,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:15,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 21:08:15,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-15 21:08:15,674 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting uspace_ring_mapErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash -380570405, now seen corresponding path program 1 times [2022-10-15 21:08:15,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:15,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075195080] [2022-10-15 21:08:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:15,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:15,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:15,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:15,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075195080] [2022-10-15 21:08:15,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075195080] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:15,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775543308] [2022-10-15 21:08:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:15,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:15,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:15,964 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:15,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 21:08:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:16,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:08:16,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:16,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:08:16,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775543308] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:16,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:08:16,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-15 21:08:16,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240675901] [2022-10-15 21:08:16,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:16,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:08:16,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:16,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:08:16,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:08:16,312 INFO L87 Difference]: Start difference. First operand 2219 states and 2839 transitions. Second operand has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:16,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:16,549 INFO L93 Difference]: Finished difference Result 2231 states and 2857 transitions. [2022-10-15 21:08:16,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:08:16,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 100 [2022-10-15 21:08:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:16,587 INFO L225 Difference]: With dead ends: 2231 [2022-10-15 21:08:16,587 INFO L226 Difference]: Without dead ends: 2230 [2022-10-15 21:08:16,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:08:16,591 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 6 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:16,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1424 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 21:08:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2022-10-15 21:08:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2182. [2022-10-15 21:08:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 1666 states have (on average 1.2683073229291717) internal successors, (2113), 1678 states have internal predecessors, (2113), 334 states have call successors, (334), 173 states have call predecessors, (334), 178 states have return successors, (344), 344 states have call predecessors, (344), 334 states have call successors, (344) [2022-10-15 21:08:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 2791 transitions. [2022-10-15 21:08:16,886 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 2791 transitions. Word has length 100 [2022-10-15 21:08:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:16,886 INFO L495 AbstractCegarLoop]: Abstraction has 2182 states and 2791 transitions. [2022-10-15 21:08:16,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-15 21:08:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 2791 transitions. [2022-10-15 21:08:16,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-10-15 21:08:16,893 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:16,893 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:16,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 21:08:17,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-15 21:08:17,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:17,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash -213747997, now seen corresponding path program 1 times [2022-10-15 21:08:17,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:17,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673376659] [2022-10-15 21:08:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-15 21:08:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:17,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673376659] [2022-10-15 21:08:17,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673376659] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:17,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170425289] [2022-10-15 21:08:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:17,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:17,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:17,486 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:17,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 21:08:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:17,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:08:17,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:17,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:08:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:18,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170425289] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:08:18,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:08:18,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 9 [2022-10-15 21:08:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438835747] [2022-10-15 21:08:18,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:08:18,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 21:08:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:18,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 21:08:18,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:08:18,076 INFO L87 Difference]: Start difference. First operand 2182 states and 2791 transitions. Second operand has 10 states, 9 states have (on average 20.11111111111111) internal successors, (181), 7 states have internal predecessors, (181), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-10-15 21:08:23,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:23,534 INFO L93 Difference]: Finished difference Result 7849 states and 10583 transitions. [2022-10-15 21:08:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-15 21:08:23,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 20.11111111111111) internal successors, (181), 7 states have internal predecessors, (181), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 105 [2022-10-15 21:08:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:23,578 INFO L225 Difference]: With dead ends: 7849 [2022-10-15 21:08:23,579 INFO L226 Difference]: Without dead ends: 7847 [2022-10-15 21:08:23,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=411, Unknown=0, NotChecked=0, Total=600 [2022-10-15 21:08:23,584 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 5662 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 2858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5882 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 5325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2858 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:23,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5882 Valid, 2135 Invalid, 5325 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2858 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-10-15 21:08:23,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7847 states. [2022-10-15 21:08:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7847 to 4255. [2022-10-15 21:08:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4255 states, 3244 states have (on average 1.2669543773119605) internal successors, (4110), 3265 states have internal predecessors, (4110), 660 states have call successors, (660), 339 states have call predecessors, (660), 348 states have return successors, (678), 678 states have call predecessors, (678), 660 states have call successors, (678) [2022-10-15 21:08:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 5448 transitions. [2022-10-15 21:08:24,079 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 5448 transitions. Word has length 105 [2022-10-15 21:08:24,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:24,080 INFO L495 AbstractCegarLoop]: Abstraction has 4255 states and 5448 transitions. [2022-10-15 21:08:24,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 20.11111111111111) internal successors, (181), 7 states have internal predecessors, (181), 4 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-10-15 21:08:24,080 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 5448 transitions. [2022-10-15 21:08:24,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-10-15 21:08:24,084 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:24,084 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:24,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 21:08:24,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:24,299 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:24,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1963747371, now seen corresponding path program 1 times [2022-10-15 21:08:24,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:24,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992551318] [2022-10-15 21:08:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:24,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-15 21:08:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:24,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:24,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992551318] [2022-10-15 21:08:24,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992551318] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:08:24,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655070515] [2022-10-15 21:08:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:24,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:24,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:08:24,675 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:08:24,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-15 21:08:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:24,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:08:25,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:08:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:08:25,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:08:25,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655070515] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:25,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:08:25,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-10-15 21:08:25,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353490814] [2022-10-15 21:08:25,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:08:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:25,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:08:25,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:08:25,144 INFO L87 Difference]: Start difference. First operand 4255 states and 5448 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-15 21:08:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:25,703 INFO L93 Difference]: Finished difference Result 4916 states and 6294 transitions. [2022-10-15 21:08:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:08:25,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 106 [2022-10-15 21:08:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:25,729 INFO L225 Difference]: With dead ends: 4916 [2022-10-15 21:08:25,730 INFO L226 Difference]: Without dead ends: 4914 [2022-10-15 21:08:25,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:08:25,734 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 844 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:25,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1238 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:08:25,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4914 states. [2022-10-15 21:08:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4914 to 3592. [2022-10-15 21:08:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 2744 states have (on average 1.2667638483965014) internal successors, (3476), 2759 states have internal predecessors, (3476), 553 states have call successors, (553), 286 states have call predecessors, (553), 294 states have return successors, (569), 569 states have call predecessors, (569), 553 states have call successors, (569) [2022-10-15 21:08:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 4598 transitions. [2022-10-15 21:08:26,135 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 4598 transitions. Word has length 106 [2022-10-15 21:08:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:26,135 INFO L495 AbstractCegarLoop]: Abstraction has 3592 states and 4598 transitions. [2022-10-15 21:08:26,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-10-15 21:08:26,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 4598 transitions. [2022-10-15 21:08:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-15 21:08:26,142 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:26,142 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:26,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-15 21:08:26,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:08:26,358 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:26,359 INFO L85 PathProgramCache]: Analyzing trace with hash 966569541, now seen corresponding path program 1 times [2022-10-15 21:08:26,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:26,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801919922] [2022-10-15 21:08:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:26,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-15 21:08:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-15 21:08:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-10-15 21:08:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:26,641 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 21:08:26,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:26,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801919922] [2022-10-15 21:08:26,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801919922] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:26,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:08:26,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:08:26,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861909971] [2022-10-15 21:08:26,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:26,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:08:26,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:26,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:08:26,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:08:26,644 INFO L87 Difference]: Start difference. First operand 3592 states and 4598 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:08:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:28,523 INFO L93 Difference]: Finished difference Result 8240 states and 10885 transitions. [2022-10-15 21:08:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:08:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 127 [2022-10-15 21:08:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:28,547 INFO L225 Difference]: With dead ends: 8240 [2022-10-15 21:08:28,547 INFO L226 Difference]: Without dead ends: 4750 [2022-10-15 21:08:28,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:08:28,561 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 848 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:28,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 1782 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-15 21:08:28,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4750 states. [2022-10-15 21:08:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4750 to 3394. [2022-10-15 21:08:28,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 2578 states have (on average 1.2513576415826222) internal successors, (3226), 2595 states have internal predecessors, (3226), 537 states have call successors, (537), 272 states have call predecessors, (537), 278 states have return successors, (549), 549 states have call predecessors, (549), 537 states have call successors, (549) [2022-10-15 21:08:28,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4312 transitions. [2022-10-15 21:08:28,894 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4312 transitions. Word has length 127 [2022-10-15 21:08:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:28,894 INFO L495 AbstractCegarLoop]: Abstraction has 3394 states and 4312 transitions. [2022-10-15 21:08:28,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:08:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4312 transitions. [2022-10-15 21:08:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-10-15 21:08:28,907 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:28,907 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:28,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-15 21:08:28,908 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:28,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1436180853, now seen corresponding path program 1 times [2022-10-15 21:08:28,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:28,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782182349] [2022-10-15 21:08:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:28,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-15 21:08:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-15 21:08:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-15 21:08:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-10-15 21:08:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-15 21:08:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-10-15 21:08:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-10-15 21:08:29,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:29,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782182349] [2022-10-15 21:08:29,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782182349] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:29,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:08:29,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:08:29,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469643899] [2022-10-15 21:08:29,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:29,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:08:29,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:08:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:08:29,325 INFO L87 Difference]: Start difference. First operand 3394 states and 4312 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-15 21:08:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:08:31,128 INFO L93 Difference]: Finished difference Result 8140 states and 10680 transitions. [2022-10-15 21:08:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:08:31,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 213 [2022-10-15 21:08:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:08:31,154 INFO L225 Difference]: With dead ends: 8140 [2022-10-15 21:08:31,154 INFO L226 Difference]: Without dead ends: 3872 [2022-10-15 21:08:31,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:08:31,173 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 1311 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:08:31,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 1251 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-15 21:08:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2022-10-15 21:08:31,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2785. [2022-10-15 21:08:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2114 states have (on average 1.2421948912015137) internal successors, (2626), 2127 states have internal predecessors, (2626), 440 states have call successors, (440), 224 states have call predecessors, (440), 230 states have return successors, (452), 452 states have call predecessors, (452), 440 states have call successors, (452) [2022-10-15 21:08:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3518 transitions. [2022-10-15 21:08:31,592 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3518 transitions. Word has length 213 [2022-10-15 21:08:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:08:31,593 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 3518 transitions. [2022-10-15 21:08:31,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-15 21:08:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3518 transitions. [2022-10-15 21:08:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-10-15 21:08:31,608 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:08:31,608 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:08:31,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-15 21:08:31,609 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [tgt_ring_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, tgt_ring_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, uspace_ring_mapErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-10-15 21:08:31,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:08:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1025570487, now seen corresponding path program 1 times [2022-10-15 21:08:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:08:31,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672369141] [2022-10-15 21:08:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:08:31,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:08:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:08:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-15 21:08:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:08:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-15 21:08:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-15 21:08:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-15 21:08:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-10-15 21:08:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:08:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-15 21:08:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-15 21:08:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-10-15 21:08:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:08:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-10-15 21:08:32,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:08:32,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672369141] [2022-10-15 21:08:32,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672369141] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:08:32,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:08:32,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-15 21:08:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472854814] [2022-10-15 21:08:32,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:08:32,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 21:08:32,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:08:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 21:08:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:08:32,213 INFO L87 Difference]: Start difference. First operand 2785 states and 3518 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)