./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e80d4f8b0edf8f5c4127bb92c8390ef5eb0df30ae80a58b9f994310767a3efd9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:54:58,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:54:58,234 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:54:58,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:54:58,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:54:58,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:54:58,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:54:58,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:54:58,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:54:58,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:54:58,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:54:58,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:54:58,271 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:54:58,272 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:54:58,272 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:54:58,273 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:54:58,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:54:58,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:54:58,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:54:58,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:54:58,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:54:58,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:54:58,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:54:58,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:54:58,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:54:58,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:54:58,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:54:58,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:54:58,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:54:58,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:54:58,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:54:58,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:54:58,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:54:58,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:54:58,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:54:58,285 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:54:58,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:54:58,286 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:54:58,286 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:54:58,286 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e80d4f8b0edf8f5c4127bb92c8390ef5eb0df30ae80a58b9f994310767a3efd9 [2023-11-06 22:54:58,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:54:58,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:54:58,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:54:58,612 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:54:58,613 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:54:58,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c [2023-11-06 22:55:01,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:55:02,612 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:55:02,613 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c [2023-11-06 22:55:02,683 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/data/98a4fc890/ac7b28cd9ef34e77a3405108a49c52dd/FLAGc5c88873b [2023-11-06 22:55:02,702 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/data/98a4fc890/ac7b28cd9ef34e77a3405108a49c52dd [2023-11-06 22:55:02,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:55:02,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:55:02,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:55:02,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:55:02,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:55:02,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:02" (1/1) ... [2023-11-06 22:55:02,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fdfa6f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:02, skipping insertion in model container [2023-11-06 22:55:02,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:55:02" (1/1) ... [2023-11-06 22:55:02,957 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:55:05,374 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c[380323,380336] [2023-11-06 22:55:05,402 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c[383339,383352] [2023-11-06 22:55:05,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:55:05,774 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:55:07,060 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c[380323,380336] [2023-11-06 22:55:07,067 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/sv-benchmarks/c/combinations/Problem05_label45+token_ring.12.cil-1.c[383339,383352] [2023-11-06 22:55:07,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:55:07,198 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:55:07,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07 WrapperNode [2023-11-06 22:55:07,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:55:07,200 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:55:07,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:55:07,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:55:07,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:07,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:07,675 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13234 [2023-11-06 22:55:07,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:55:07,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:55:07,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:55:07,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:55:07,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:07,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:07,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:07,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:08,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:08,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:08,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:08,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:08,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:55:08,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:55:08,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:55:08,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:55:08,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (1/1) ... [2023-11-06 22:55:08,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:55:08,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:55:08,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:55:08,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0511feab-297f-40f2-9138-0a2f087fc867/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:55:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:55:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-06 22:55:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-06 22:55:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-06 22:55:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-06 22:55:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-06 22:55:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-06 22:55:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-06 22:55:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-06 22:55:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-06 22:55:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-06 22:55:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-06 22:55:08,674 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-06 22:55:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-06 22:55:08,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-06 22:55:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:55:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:55:08,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:55:08,907 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:55:08,909 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:55:18,547 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:55:18,584 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:55:18,585 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 22:55:18,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:18 BoogieIcfgContainer [2023-11-06 22:55:18,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:55:18,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:55:18,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:55:18,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:55:18,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:55:02" (1/3) ... [2023-11-06 22:55:18,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16800ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:18, skipping insertion in model container [2023-11-06 22:55:18,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:55:07" (2/3) ... [2023-11-06 22:55:18,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16800ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:55:18, skipping insertion in model container [2023-11-06 22:55:18,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:55:18" (3/3) ... [2023-11-06 22:55:18,609 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.12.cil-1.c [2023-11-06 22:55:18,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:55:18,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:55:18,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:55:18,775 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11da603a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:55:18,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:55:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 2586 states, 2548 states have (on average 1.8390894819466248) internal successors, (4686), 2553 states have internal predecessors, (4686), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-06 22:55:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:55:18,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:18,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:18,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:18,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:18,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1115616810, now seen corresponding path program 1 times [2023-11-06 22:55:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482896470] [2023-11-06 22:55:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:19,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:55:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:55:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:19,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:55:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:55:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:19,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:55:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:19,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:19,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482896470] [2023-11-06 22:55:19,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482896470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:19,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:19,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:55:19,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490267132] [2023-11-06 22:55:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:19,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:55:19,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:19,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:55:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:55:19,752 INFO L87 Difference]: Start difference. First operand has 2586 states, 2548 states have (on average 1.8390894819466248) internal successors, (4686), 2553 states have internal predecessors, (4686), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:22,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:22,797 INFO L93 Difference]: Finished difference Result 5307 states and 9718 transitions. [2023-11-06 22:55:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:55:22,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:55:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:22,834 INFO L225 Difference]: With dead ends: 5307 [2023-11-06 22:55:22,834 INFO L226 Difference]: Without dead ends: 2660 [2023-11-06 22:55:22,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:55:22,847 INFO L413 NwaCegarLoop]: 4394 mSDtfsCounter, 1065 mSDsluCounter, 12509 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 16903 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:55:22,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 16903 Invalid, 1097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 22:55:22,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2023-11-06 22:55:23,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2518. [2023-11-06 22:55:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2482 states have (on average 1.82232070910556) internal successors, (4523), 2485 states have internal predecessors, (4523), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 22:55:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4577 transitions. [2023-11-06 22:55:23,049 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4577 transitions. Word has length 179 [2023-11-06 22:55:23,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:23,050 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 4577 transitions. [2023-11-06 22:55:23,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:23,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4577 transitions. [2023-11-06 22:55:23,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:55:23,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:23,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:23,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:55:23,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:23,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1676252180, now seen corresponding path program 1 times [2023-11-06 22:55:23,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:23,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508453537] [2023-11-06 22:55:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:23,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:23,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:55:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:55:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:55:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:23,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:55:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:55:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:23,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:23,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508453537] [2023-11-06 22:55:23,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508453537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:23,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:23,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:55:23,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040878467] [2023-11-06 22:55:23,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:23,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:55:23,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:23,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:55:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:55:23,420 INFO L87 Difference]: Start difference. First operand 2518 states and 4577 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:26,281 INFO L93 Difference]: Finished difference Result 3042 states and 5416 transitions. [2023-11-06 22:55:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:55:26,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:55:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:26,301 INFO L225 Difference]: With dead ends: 3042 [2023-11-06 22:55:26,301 INFO L226 Difference]: Without dead ends: 2660 [2023-11-06 22:55:26,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:55:26,306 INFO L413 NwaCegarLoop]: 4324 mSDtfsCounter, 1051 mSDsluCounter, 12306 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 16630 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:55:26,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 16630 Invalid, 1096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 22:55:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2023-11-06 22:55:26,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2518. [2023-11-06 22:55:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2482 states have (on average 1.821917808219178) internal successors, (4522), 2485 states have internal predecessors, (4522), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 22:55:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4576 transitions. [2023-11-06 22:55:26,441 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4576 transitions. Word has length 179 [2023-11-06 22:55:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:26,442 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 4576 transitions. [2023-11-06 22:55:26,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4576 transitions. [2023-11-06 22:55:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:55:26,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:26,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:55:26,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:26,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2048443310, now seen corresponding path program 1 times [2023-11-06 22:55:26,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:26,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881963359] [2023-11-06 22:55:26,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:26,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:26,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:55:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:55:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:55:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:55:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:55:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:26,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:26,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881963359] [2023-11-06 22:55:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881963359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:26,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:26,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:55:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029801344] [2023-11-06 22:55:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:26,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:55:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:26,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:55:26,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:55:26,876 INFO L87 Difference]: Start difference. First operand 2518 states and 4576 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:31,979 INFO L93 Difference]: Finished difference Result 3574 states and 6273 transitions. [2023-11-06 22:55:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:55:31,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:55:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:32,012 INFO L225 Difference]: With dead ends: 3574 [2023-11-06 22:55:32,013 INFO L226 Difference]: Without dead ends: 3197 [2023-11-06 22:55:32,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:55:32,026 INFO L413 NwaCegarLoop]: 4345 mSDtfsCounter, 5546 mSDsluCounter, 13009 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5565 SdHoareTripleChecker+Valid, 17354 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:55:32,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5565 Valid, 17354 Invalid, 2435 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-06 22:55:32,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2023-11-06 22:55:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 2912. [2023-11-06 22:55:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2912 states, 2848 states have (on average 1.7910814606741574) internal successors, (5101), 2852 states have internal predecessors, (5101), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-11-06 22:55:32,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 5200 transitions. [2023-11-06 22:55:32,299 INFO L78 Accepts]: Start accepts. Automaton has 2912 states and 5200 transitions. Word has length 179 [2023-11-06 22:55:32,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:32,299 INFO L495 AbstractCegarLoop]: Abstraction has 2912 states and 5200 transitions. [2023-11-06 22:55:32,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:32,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2912 states and 5200 transitions. [2023-11-06 22:55:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:55:32,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:32,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:32,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:55:32,305 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:32,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash 662703530, now seen corresponding path program 1 times [2023-11-06 22:55:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:32,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10813669] [2023-11-06 22:55:32,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:55:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:55:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:55:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:32,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:55:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:55:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:32,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10813669] [2023-11-06 22:55:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10813669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:32,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:55:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613982372] [2023-11-06 22:55:32,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:32,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:55:32,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:32,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:55:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:55:32,736 INFO L87 Difference]: Start difference. First operand 2912 states and 5200 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:38,600 INFO L93 Difference]: Finished difference Result 4523 states and 7793 transitions. [2023-11-06 22:55:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:55:38,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:55:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:38,624 INFO L225 Difference]: With dead ends: 4523 [2023-11-06 22:55:38,624 INFO L226 Difference]: Without dead ends: 3752 [2023-11-06 22:55:38,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:55:38,629 INFO L413 NwaCegarLoop]: 4556 mSDtfsCounter, 5579 mSDsluCounter, 17901 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5598 SdHoareTripleChecker+Valid, 22457 SdHoareTripleChecker+Invalid, 3662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:55:38,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5598 Valid, 22457 Invalid, 3662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-06 22:55:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2023-11-06 22:55:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3279. [2023-11-06 22:55:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3279 states, 3187 states have (on average 1.7652965171007218) internal successors, (5626), 3192 states have internal predecessors, (5626), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2023-11-06 22:55:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3279 states to 3279 states and 5769 transitions. [2023-11-06 22:55:38,904 INFO L78 Accepts]: Start accepts. Automaton has 3279 states and 5769 transitions. Word has length 179 [2023-11-06 22:55:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:38,905 INFO L495 AbstractCegarLoop]: Abstraction has 3279 states and 5769 transitions. [2023-11-06 22:55:38,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3279 states and 5769 transitions. [2023-11-06 22:55:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:55:38,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:38,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:38,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:55:38,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:38,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:38,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1106768084, now seen corresponding path program 1 times [2023-11-06 22:55:38,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:38,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465776030] [2023-11-06 22:55:38,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:38,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:55:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:39,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:55:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:55:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:55:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:55:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:39,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:39,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465776030] [2023-11-06 22:55:39,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465776030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:39,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:39,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:55:39,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264869648] [2023-11-06 22:55:39,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:39,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:55:39,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:39,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:55:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:55:39,444 INFO L87 Difference]: Start difference. First operand 3279 states and 5769 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:45,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:45,411 INFO L93 Difference]: Finished difference Result 5923 states and 10016 transitions. [2023-11-06 22:55:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:55:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:55:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:45,445 INFO L225 Difference]: With dead ends: 5923 [2023-11-06 22:55:45,446 INFO L226 Difference]: Without dead ends: 4785 [2023-11-06 22:55:45,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:55:45,455 INFO L413 NwaCegarLoop]: 4304 mSDtfsCounter, 5693 mSDsluCounter, 17175 mSDsCounter, 0 mSdLazyCounter, 3058 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5712 SdHoareTripleChecker+Valid, 21479 SdHoareTripleChecker+Invalid, 3165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:55:45,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5712 Valid, 21479 Invalid, 3165 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3058 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 22:55:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2023-11-06 22:55:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 4014. [2023-11-06 22:55:45,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 3866 states have (on average 1.7271081220900155) internal successors, (6677), 3873 states have internal predecessors, (6677), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2023-11-06 22:55:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 6912 transitions. [2023-11-06 22:55:45,837 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 6912 transitions. Word has length 179 [2023-11-06 22:55:45,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:45,838 INFO L495 AbstractCegarLoop]: Abstraction has 4014 states and 6912 transitions. [2023-11-06 22:55:45,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 6912 transitions. [2023-11-06 22:55:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:55:45,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:45,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:45,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:55:45,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:45,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:45,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1718037142, now seen corresponding path program 1 times [2023-11-06 22:55:45,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:45,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263197102] [2023-11-06 22:55:45,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:45,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:46,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:55:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:55:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:55:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:46,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:55:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:55:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:46,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:46,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263197102] [2023-11-06 22:55:46,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263197102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:46,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:46,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:55:46,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660883605] [2023-11-06 22:55:46,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:46,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:55:46,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:46,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:55:46,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:55:46,253 INFO L87 Difference]: Start difference. First operand 4014 states and 6912 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:52,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:55:52,751 INFO L93 Difference]: Finished difference Result 8618 states and 14267 transitions. [2023-11-06 22:55:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:55:52,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:55:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:55:52,794 INFO L225 Difference]: With dead ends: 8618 [2023-11-06 22:55:52,794 INFO L226 Difference]: Without dead ends: 6745 [2023-11-06 22:55:52,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:55:52,805 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 5577 mSDsluCounter, 17901 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5596 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:55:52,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5596 Valid, 22455 Invalid, 3653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:55:52,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2023-11-06 22:55:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 5485. [2023-11-06 22:55:53,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5485 states, 5225 states have (on average 1.6801913875598087) internal successors, (8779), 5236 states have internal predecessors, (8779), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2023-11-06 22:55:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 9204 transitions. [2023-11-06 22:55:53,594 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 9204 transitions. Word has length 179 [2023-11-06 22:55:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:55:53,595 INFO L495 AbstractCegarLoop]: Abstraction has 5485 states and 9204 transitions. [2023-11-06 22:55:53,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:55:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 9204 transitions. [2023-11-06 22:55:53,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:55:53,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:55:53,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:55:53,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:55:53,601 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:55:53,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:55:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1171738476, now seen corresponding path program 1 times [2023-11-06 22:55:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:55:53,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948238783] [2023-11-06 22:55:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:55:53,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:55:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:55:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:55:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:55:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:55:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:55:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:55:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:55:54,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:55:54,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948238783] [2023-11-06 22:55:54,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948238783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:55:54,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:55:54,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:55:54,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601181038] [2023-11-06 22:55:54,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:55:54,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:55:54,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:55:54,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:55:54,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:55:54,005 INFO L87 Difference]: Start difference. First operand 5485 states and 9204 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:56:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:00,781 INFO L93 Difference]: Finished difference Result 14000 states and 22773 transitions. [2023-11-06 22:56:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:56:00,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:56:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:00,829 INFO L225 Difference]: With dead ends: 14000 [2023-11-06 22:56:00,829 INFO L226 Difference]: Without dead ends: 10656 [2023-11-06 22:56:00,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:56:00,846 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 5573 mSDsluCounter, 17901 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5592 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 3625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:00,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5592 Valid, 22455 Invalid, 3625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 22:56:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2023-11-06 22:56:02,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 8441. [2023-11-06 22:56:02,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8441 states, 7957 states have (on average 1.6346613045117506) internal successors, (13007), 7976 states have internal predecessors, (13007), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2023-11-06 22:56:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8441 states to 8441 states and 13830 transitions. [2023-11-06 22:56:02,059 INFO L78 Accepts]: Start accepts. Automaton has 8441 states and 13830 transitions. Word has length 179 [2023-11-06 22:56:02,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:02,059 INFO L495 AbstractCegarLoop]: Abstraction has 8441 states and 13830 transitions. [2023-11-06 22:56:02,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:56:02,060 INFO L276 IsEmpty]: Start isEmpty. Operand 8441 states and 13830 transitions. [2023-11-06 22:56:02,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:56:02,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:02,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:02,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:56:02,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:02,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1676647954, now seen corresponding path program 1 times [2023-11-06 22:56:02,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:02,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410607567] [2023-11-06 22:56:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:56:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:56:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:56:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:56:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:02,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:02,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410607567] [2023-11-06 22:56:02,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410607567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:02,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:02,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:02,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920292857] [2023-11-06 22:56:02,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:02,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:02,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:02,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:02,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:02,449 INFO L87 Difference]: Start difference. First operand 8441 states and 13830 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:56:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:10,782 INFO L93 Difference]: Finished difference Result 24782 states and 39877 transitions. [2023-11-06 22:56:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:56:10,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:56:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:10,850 INFO L225 Difference]: With dead ends: 24782 [2023-11-06 22:56:10,850 INFO L226 Difference]: Without dead ends: 18482 [2023-11-06 22:56:10,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:56:10,879 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 5572 mSDsluCounter, 17901 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5591 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:10,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5591 Valid, 22455 Invalid, 3612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 22:56:10,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18482 states. [2023-11-06 22:56:12,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18482 to 14366. [2023-11-06 22:56:12,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14366 states, 13434 states have (on average 1.5990025308917672) internal successors, (21481), 13469 states have internal predecessors, (21481), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-11-06 22:56:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14366 states to 14366 states and 23154 transitions. [2023-11-06 22:56:12,722 INFO L78 Accepts]: Start accepts. Automaton has 14366 states and 23154 transitions. Word has length 179 [2023-11-06 22:56:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:12,722 INFO L495 AbstractCegarLoop]: Abstraction has 14366 states and 23154 transitions. [2023-11-06 22:56:12,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:56:12,723 INFO L276 IsEmpty]: Start isEmpty. Operand 14366 states and 23154 transitions. [2023-11-06 22:56:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:56:12,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:12,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:12,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:56:12,737 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:12,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:12,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1695151916, now seen corresponding path program 1 times [2023-11-06 22:56:12,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:12,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909798050] [2023-11-06 22:56:12,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:12,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:12,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:56:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:56:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:56:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:56:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:13,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:13,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909798050] [2023-11-06 22:56:13,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909798050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:13,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:13,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19201800] [2023-11-06 22:56:13,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:13,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:13,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:13,119 INFO L87 Difference]: Start difference. First operand 14366 states and 23154 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:56:18,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:18,566 INFO L93 Difference]: Finished difference Result 30958 states and 49908 transitions. [2023-11-06 22:56:18,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:56:18,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:56:18,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:18,635 INFO L225 Difference]: With dead ends: 30958 [2023-11-06 22:56:18,635 INFO L226 Difference]: Without dead ends: 18733 [2023-11-06 22:56:18,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:56:18,679 INFO L413 NwaCegarLoop]: 4279 mSDtfsCounter, 5292 mSDsluCounter, 12675 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5312 SdHoareTripleChecker+Valid, 16954 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:18,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5312 Valid, 16954 Invalid, 1746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 22:56:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18733 states. [2023-11-06 22:56:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18733 to 14366. [2023-11-06 22:56:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14366 states, 13434 states have (on average 1.5965460771177609) internal successors, (21448), 13469 states have internal predecessors, (21448), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2023-11-06 22:56:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14366 states to 14366 states and 23121 transitions. [2023-11-06 22:56:20,843 INFO L78 Accepts]: Start accepts. Automaton has 14366 states and 23121 transitions. Word has length 179 [2023-11-06 22:56:20,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:20,843 INFO L495 AbstractCegarLoop]: Abstraction has 14366 states and 23121 transitions. [2023-11-06 22:56:20,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:56:20,844 INFO L276 IsEmpty]: Start isEmpty. Operand 14366 states and 23121 transitions. [2023-11-06 22:56:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:56:20,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:20,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:20,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:56:20,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:20,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2081014318, now seen corresponding path program 1 times [2023-11-06 22:56:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:20,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872744409] [2023-11-06 22:56:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:20,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:21,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:56:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:56:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:21,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:56:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:21,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:56:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:21,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:21,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872744409] [2023-11-06 22:56:21,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872744409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:21,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:21,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:21,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971458990] [2023-11-06 22:56:21,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:21,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:21,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:21,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:21,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:21,221 INFO L87 Difference]: Start difference. First operand 14366 states and 23121 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:56:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:32,425 INFO L93 Difference]: Finished difference Result 46311 states and 74043 transitions. [2023-11-06 22:56:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:56:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:56:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:32,549 INFO L225 Difference]: With dead ends: 46311 [2023-11-06 22:56:32,549 INFO L226 Difference]: Without dead ends: 34086 [2023-11-06 22:56:32,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:56:32,588 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 5564 mSDsluCounter, 17901 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5583 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:32,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5583 Valid, 22455 Invalid, 3574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 22:56:32,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34086 states. [2023-11-06 22:56:36,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34086 to 26280. [2023-11-06 22:56:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26280 states, 24452 states have (on average 1.5722231310322263) internal successors, (38444), 24519 states have internal predecessors, (38444), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2023-11-06 22:56:36,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26280 states to 26280 states and 41979 transitions. [2023-11-06 22:56:36,688 INFO L78 Accepts]: Start accepts. Automaton has 26280 states and 41979 transitions. Word has length 179 [2023-11-06 22:56:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:56:36,689 INFO L495 AbstractCegarLoop]: Abstraction has 26280 states and 41979 transitions. [2023-11-06 22:56:36,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:56:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 26280 states and 41979 transitions. [2023-11-06 22:56:36,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:56:36,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:36,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:36,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:56:36,709 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:56:36,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1816366828, now seen corresponding path program 1 times [2023-11-06 22:56:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:36,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339197178] [2023-11-06 22:56:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:36,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:36,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:56:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:36,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:56:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:37,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:56:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:37,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:56:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:37,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:56:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:56:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:56:37,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:56:37,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339197178] [2023-11-06 22:56:37,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339197178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:56:37,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:56:37,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:56:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031868034] [2023-11-06 22:56:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:56:37,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:56:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:56:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:56:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:56:37,250 INFO L87 Difference]: Start difference. First operand 26280 states and 41979 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:56:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:56:55,036 INFO L93 Difference]: Finished difference Result 89439 states and 143251 transitions. [2023-11-06 22:56:55,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:56:55,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2023-11-06 22:56:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:56:55,286 INFO L225 Difference]: With dead ends: 89439 [2023-11-06 22:56:55,287 INFO L226 Difference]: Without dead ends: 65300 [2023-11-06 22:56:55,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:56:55,362 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 5563 mSDsluCounter, 17901 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5582 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:56:55,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5582 Valid, 22455 Invalid, 3561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 22:56:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65300 states. [2023-11-06 22:57:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65300 to 50169. [2023-11-06 22:57:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50169 states, 46549 states have (on average 1.5580571011192508) internal successors, (72526), 46680 states have internal predecessors, (72526), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2023-11-06 22:57:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50169 states to 50169 states and 80271 transitions. [2023-11-06 22:57:03,930 INFO L78 Accepts]: Start accepts. Automaton has 50169 states and 80271 transitions. Word has length 179 [2023-11-06 22:57:03,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:03,930 INFO L495 AbstractCegarLoop]: Abstraction has 50169 states and 80271 transitions. [2023-11-06 22:57:03,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:57:03,930 INFO L276 IsEmpty]: Start isEmpty. Operand 50169 states and 80271 transitions. [2023-11-06 22:57:03,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-06 22:57:03,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:03,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:03,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:57:03,968 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:03,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash -547474834, now seen corresponding path program 1 times [2023-11-06 22:57:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:03,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971837030] [2023-11-06 22:57:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:03,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 22:57:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:57:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:04,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-06 22:57:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 22:57:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-06 22:57:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:04,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:04,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971837030] [2023-11-06 22:57:04,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971837030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:04,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:04,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:57:04,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620196566] [2023-11-06 22:57:04,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:57:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:57:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:04,518 INFO L87 Difference]: Start difference. First operand 50169 states and 80271 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)