./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:42:15,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:42:15,164 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:42:15,172 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:42:15,173 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:42:15,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:42:15,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:42:15,214 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:42:15,215 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:42:15,219 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:42:15,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:42:15,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:42:15,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:42:15,223 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:42:15,223 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:42:15,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:42:15,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:42:15,225 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:42:15,225 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:42:15,225 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:42:15,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:42:15,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:42:15,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:42:15,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:42:15,228 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:42:15,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:42:15,228 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:42:15,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:42:15,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:42:15,230 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:42:15,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:42:15,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:42:15,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:42:15,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:42:15,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:42:15,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:42:15,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:42:15,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:42:15,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:42:15,234 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:42:15,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:42:15,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:42:15,235 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_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cb4677417bffcd5881eb90c9776ad9c1dd0362c552c5face38646e7c65c86d6 [2023-11-24 21:42:15,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:42:15,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:42:15,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:42:15,531 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:42:15,532 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:42:15,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2023-11-24 21:42:18,676 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:42:19,599 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:42:19,599 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c [2023-11-24 21:42:19,650 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/data/7539bdd05/f1dca048b7a246a29313a8bbbb40ca48/FLAG0cad32362 [2023-11-24 21:42:19,669 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/data/7539bdd05/f1dca048b7a246a29313a8bbbb40ca48 [2023-11-24 21:42:19,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:42:19,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:42:19,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:42:19,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:42:19,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:42:19,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:42:19" (1/1) ... [2023-11-24 21:42:19,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e8d4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:19, skipping insertion in model container [2023-11-24 21:42:19,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:42:19" (1/1) ... [2023-11-24 21:42:19,942 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:42:22,364 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_a7b64579-f722-46b2-8421-61fbcad74062/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2023-11-24 21:42:22,402 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_a7b64579-f722-46b2-8421-61fbcad74062/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2023-11-24 21:42:22,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:42:22,625 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:42:23,909 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_a7b64579-f722-46b2-8421-61fbcad74062/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[375709,375722] [2023-11-24 21:42:23,921 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_a7b64579-f722-46b2-8421-61fbcad74062/sv-benchmarks/c/combinations/Problem05_label48+token_ring.03.cil-2.c[383339,383352] [2023-11-24 21:42:23,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:42:24,030 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:42:24,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24 WrapperNode [2023-11-24 21:42:24,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:42:24,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:42:24,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:42:24,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:42:24,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:24,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:24,615 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12688 [2023-11-24 21:42:24,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:42:24,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:42:24,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:42:24,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:42:24,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:24,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:24,693 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:24,774 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 21:42:24,780 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:24,780 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:25,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:25,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:25,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:25,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:25,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:42:25,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:42:25,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:42:25,250 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:42:25,251 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (1/1) ... [2023-11-24 21:42:25,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:42:25,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:42:25,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:42:25,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:42:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:42:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:42:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:42:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:42:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:42:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:42:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:42:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:42:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:42:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:42:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:42:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:42:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:42:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:42:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:42:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:42:25,444 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:42:25,447 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:42:35,148 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:42:35,274 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:42:35,275 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-24 21:42:35,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:42:35 BoogieIcfgContainer [2023-11-24 21:42:35,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:42:35,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:42:35,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:42:35,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:42:35,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:42:19" (1/3) ... [2023-11-24 21:42:35,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc91199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:42:35, skipping insertion in model container [2023-11-24 21:42:35,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:24" (2/3) ... [2023-11-24 21:42:35,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc91199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:42:35, skipping insertion in model container [2023-11-24 21:42:35,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:42:35" (3/3) ... [2023-11-24 21:42:35,287 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.03.cil-2.c [2023-11-24 21:42:35,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:42:35,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:42:35,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:42:35,416 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7fc53a94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:42:35,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:42:35,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 2264 states, 2238 states have (on average 1.8847184986595173) internal successors, (4218), 2241 states have internal predecessors, (4218), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-24 21:42:35,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 21:42:35,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:35,448 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] [2023-11-24 21:42:35,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:35,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1010118271, now seen corresponding path program 1 times [2023-11-24 21:42:35,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:35,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144289557] [2023-11-24 21:42:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:35,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:36,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:36,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:36,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144289557] [2023-11-24 21:42:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144289557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:36,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:36,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:42:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322889876] [2023-11-24 21:42:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:36,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:42:36,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:36,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:42:36,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:42:36,245 INFO L87 Difference]: Start difference. First operand has 2264 states, 2238 states have (on average 1.8847184986595173) internal successors, (4218), 2241 states have internal predecessors, (4218), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:37,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:37,995 INFO L93 Difference]: Finished difference Result 4732 states and 8845 transitions. [2023-11-24 21:42:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:42:37,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2023-11-24 21:42:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:38,031 INFO L225 Difference]: With dead ends: 4732 [2023-11-24 21:42:38,032 INFO L226 Difference]: Without dead ends: 2471 [2023-11-24 21:42:38,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:42:38,052 INFO L413 NwaCegarLoop]: 4074 mSDtfsCounter, 4459 mSDsluCounter, 12195 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4469 SdHoareTripleChecker+Valid, 16269 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:38,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4469 Valid, 16269 Invalid, 864 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [72 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 21:42:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2023-11-24 21:42:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2392. [2023-11-24 21:42:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 2348 states have (on average 1.8373083475298126) internal successors, (4314), 2351 states have internal predecessors, (4314), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2023-11-24 21:42:38,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 4375 transitions. [2023-11-24 21:42:38,274 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 4375 transitions. Word has length 71 [2023-11-24 21:42:38,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:38,275 INFO L495 AbstractCegarLoop]: Abstraction has 2392 states and 4375 transitions. [2023-11-24 21:42:38,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 4375 transitions. [2023-11-24 21:42:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 21:42:38,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:38,291 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] [2023-11-24 21:42:38,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:42:38,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:38,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:38,292 INFO L85 PathProgramCache]: Analyzing trace with hash -308869883, now seen corresponding path program 1 times [2023-11-24 21:42:38,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:38,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589209789] [2023-11-24 21:42:38,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:38,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:38,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:38,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:38,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589209789] [2023-11-24 21:42:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589209789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:38,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:38,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:38,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064573658] [2023-11-24 21:42:38,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:38,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:38,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:38,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:38,605 INFO L87 Difference]: Start difference. First operand 2392 states and 4375 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:40,379 INFO L93 Difference]: Finished difference Result 2906 states and 5181 transitions. [2023-11-24 21:42:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:42:40,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2023-11-24 21:42:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:40,398 INFO L225 Difference]: With dead ends: 2906 [2023-11-24 21:42:40,398 INFO L226 Difference]: Without dead ends: 2644 [2023-11-24 21:42:40,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:42:40,402 INFO L413 NwaCegarLoop]: 4151 mSDtfsCounter, 4453 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4463 SdHoareTripleChecker+Valid, 20570 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:40,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4463 Valid, 20570 Invalid, 1329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 21:42:40,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2023-11-24 21:42:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2515. [2023-11-24 21:42:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2452 states have (on average 1.8242251223491028) internal successors, (4473), 2456 states have internal predecessors, (4473), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2023-11-24 21:42:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 4560 transitions. [2023-11-24 21:42:40,497 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 4560 transitions. Word has length 71 [2023-11-24 21:42:40,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:40,497 INFO L495 AbstractCegarLoop]: Abstraction has 2515 states and 4560 transitions. [2023-11-24 21:42:40,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 4560 transitions. [2023-11-24 21:42:40,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 21:42:40,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:40,501 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] [2023-11-24 21:42:40,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:42:40,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:40,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:40,504 INFO L85 PathProgramCache]: Analyzing trace with hash 124859203, now seen corresponding path program 1 times [2023-11-24 21:42:40,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:40,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549208610] [2023-11-24 21:42:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:40,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:40,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:40,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:40,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:40,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549208610] [2023-11-24 21:42:40,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549208610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:40,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:40,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:40,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807406705] [2023-11-24 21:42:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:40,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:40,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:40,712 INFO L87 Difference]: Start difference. First operand 2515 states and 4560 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:42,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:42,370 INFO L93 Difference]: Finished difference Result 3352 states and 5868 transitions. [2023-11-24 21:42:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:42:42,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2023-11-24 21:42:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:42,392 INFO L225 Difference]: With dead ends: 3352 [2023-11-24 21:42:42,392 INFO L226 Difference]: Without dead ends: 2967 [2023-11-24 21:42:42,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:42:42,396 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4451 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 20568 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:42,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4461 Valid, 20568 Invalid, 1327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 21:42:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2023-11-24 21:42:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2762. [2023-11-24 21:42:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2661 states have (on average 1.8008267568583238) internal successors, (4792), 2667 states have internal predecessors, (4792), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2023-11-24 21:42:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4935 transitions. [2023-11-24 21:42:42,627 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4935 transitions. Word has length 71 [2023-11-24 21:42:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:42,627 INFO L495 AbstractCegarLoop]: Abstraction has 2762 states and 4935 transitions. [2023-11-24 21:42:42,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4935 transitions. [2023-11-24 21:42:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 21:42:42,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:42,630 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] [2023-11-24 21:42:42,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:42:42,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:42,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:42,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1385776453, now seen corresponding path program 1 times [2023-11-24 21:42:42,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:42,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58421213] [2023-11-24 21:42:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:42,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:42,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:42,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58421213] [2023-11-24 21:42:42,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58421213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:42,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:42,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:42,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570853362] [2023-11-24 21:42:42,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:42,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:42,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:42,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:42,802 INFO L87 Difference]: Start difference. First operand 2762 states and 4935 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:43,629 INFO L93 Difference]: Finished difference Result 3589 states and 6236 transitions. [2023-11-24 21:42:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:42:43,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2023-11-24 21:42:43,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:43,652 INFO L225 Difference]: With dead ends: 3589 [2023-11-24 21:42:43,653 INFO L226 Difference]: Without dead ends: 2957 [2023-11-24 21:42:43,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:42:43,668 INFO L413 NwaCegarLoop]: 4057 mSDtfsCounter, 4387 mSDsluCounter, 12099 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4398 SdHoareTripleChecker+Valid, 16156 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:43,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4398 Valid, 16156 Invalid, 636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 21:42:43,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2957 states. [2023-11-24 21:42:43,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2957 to 2762. [2023-11-24 21:42:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2661 states have (on average 1.7989477639984968) internal successors, (4787), 2667 states have internal predecessors, (4787), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2023-11-24 21:42:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4930 transitions. [2023-11-24 21:42:43,825 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4930 transitions. Word has length 71 [2023-11-24 21:42:43,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:43,825 INFO L495 AbstractCegarLoop]: Abstraction has 2762 states and 4930 transitions. [2023-11-24 21:42:43,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4930 transitions. [2023-11-24 21:42:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 21:42:43,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:43,828 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] [2023-11-24 21:42:43,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:42:43,829 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:43,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:43,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1426451203, now seen corresponding path program 1 times [2023-11-24 21:42:43,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:43,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329992948] [2023-11-24 21:42:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:43,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:43,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:44,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:44,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:44,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329992948] [2023-11-24 21:42:44,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329992948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:44,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:44,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806042877] [2023-11-24 21:42:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:44,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:44,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:44,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:44,032 INFO L87 Difference]: Start difference. First operand 2762 states and 4930 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:45,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:45,786 INFO L93 Difference]: Finished difference Result 4380 states and 7425 transitions. [2023-11-24 21:42:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:42:45,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2023-11-24 21:42:45,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:45,813 INFO L225 Difference]: With dead ends: 4380 [2023-11-24 21:42:45,813 INFO L226 Difference]: Without dead ends: 3748 [2023-11-24 21:42:45,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:42:45,818 INFO L413 NwaCegarLoop]: 4147 mSDtfsCounter, 4558 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4572 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:45,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4572 Valid, 20561 Invalid, 1287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 21:42:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2023-11-24 21:42:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3253. [2023-11-24 21:42:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3253 states, 3080 states have (on average 1.7603896103896104) internal successors, (5422), 3090 states have internal predecessors, (5422), 109 states have call successors, (109), 54 states have call predecessors, (109), 62 states have return successors, (144), 116 states have call predecessors, (144), 109 states have call successors, (144) [2023-11-24 21:42:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3253 states to 3253 states and 5675 transitions. [2023-11-24 21:42:45,985 INFO L78 Accepts]: Start accepts. Automaton has 3253 states and 5675 transitions. Word has length 71 [2023-11-24 21:42:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:45,985 INFO L495 AbstractCegarLoop]: Abstraction has 3253 states and 5675 transitions. [2023-11-24 21:42:45,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3253 states and 5675 transitions. [2023-11-24 21:42:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 21:42:45,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:45,988 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] [2023-11-24 21:42:45,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:42:45,989 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:45,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:45,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1481730683, now seen corresponding path program 1 times [2023-11-24 21:42:45,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:45,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665875418] [2023-11-24 21:42:45,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:45,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:46,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:46,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:46,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:46,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665875418] [2023-11-24 21:42:46,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665875418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:46,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:46,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264641410] [2023-11-24 21:42:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:46,246 INFO L87 Difference]: Start difference. First operand 3253 states and 5675 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:48,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:48,155 INFO L93 Difference]: Finished difference Result 6161 states and 10154 transitions. [2023-11-24 21:42:48,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:42:48,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2023-11-24 21:42:48,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:48,191 INFO L225 Difference]: With dead ends: 6161 [2023-11-24 21:42:48,191 INFO L226 Difference]: Without dead ends: 5038 [2023-11-24 21:42:48,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:42:48,198 INFO L413 NwaCegarLoop]: 4146 mSDtfsCounter, 4460 mSDsluCounter, 16411 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4469 SdHoareTripleChecker+Valid, 20557 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:48,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4469 Valid, 20557 Invalid, 1444 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 21:42:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5038 states. [2023-11-24 21:42:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5038 to 4191. [2023-11-24 21:42:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3878 states have (on average 1.709128416709644) internal successors, (6628), 3896 states have internal predecessors, (6628), 193 states have call successors, (193), 102 states have call predecessors, (193), 118 states have return successors, (290), 208 states have call predecessors, (290), 193 states have call successors, (290) [2023-11-24 21:42:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 7111 transitions. [2023-11-24 21:42:48,449 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 7111 transitions. Word has length 71 [2023-11-24 21:42:48,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:48,449 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 7111 transitions. [2023-11-24 21:42:48,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:48,449 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 7111 transitions. [2023-11-24 21:42:48,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 21:42:48,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:48,453 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] [2023-11-24 21:42:48,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:42:48,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:48,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:48,454 INFO L85 PathProgramCache]: Analyzing trace with hash -605711677, now seen corresponding path program 1 times [2023-11-24 21:42:48,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:48,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738338188] [2023-11-24 21:42:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:48,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:48,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:48,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:48,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:48,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738338188] [2023-11-24 21:42:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738338188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:48,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:48,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:42:48,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039288435] [2023-11-24 21:42:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:42:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:48,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:42:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:48,615 INFO L87 Difference]: Start difference. First operand 4191 states and 7111 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:50,223 INFO L93 Difference]: Finished difference Result 9281 states and 14962 transitions. [2023-11-24 21:42:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 21:42:50,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2023-11-24 21:42:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:50,296 INFO L225 Difference]: With dead ends: 9281 [2023-11-24 21:42:50,296 INFO L226 Difference]: Without dead ends: 7220 [2023-11-24 21:42:50,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 21:42:50,308 INFO L413 NwaCegarLoop]: 4147 mSDtfsCounter, 4448 mSDsluCounter, 16414 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4462 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:50,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4462 Valid, 20561 Invalid, 1244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:42:50,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7220 states. [2023-11-24 21:42:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7220 to 6122. [2023-11-24 21:42:50,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 5537 states have (on average 1.6525194148455842) internal successors, (9150), 5571 states have internal predecessors, (9150), 353 states have call successors, (353), 198 states have call predecessors, (353), 230 states have return successors, (628), 384 states have call predecessors, (628), 353 states have call successors, (628) [2023-11-24 21:42:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 10131 transitions. [2023-11-24 21:42:50,804 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 10131 transitions. Word has length 71 [2023-11-24 21:42:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:50,805 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 10131 transitions. [2023-11-24 21:42:50,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 10131 transitions. [2023-11-24 21:42:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-24 21:42:50,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:50,814 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] [2023-11-24 21:42:50,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:42:50,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:50,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:50,816 INFO L85 PathProgramCache]: Analyzing trace with hash 932628353, now seen corresponding path program 1 times [2023-11-24 21:42:50,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:50,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936933204] [2023-11-24 21:42:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:50,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:50,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:50,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:50,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:50,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:50,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:50,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936933204] [2023-11-24 21:42:50,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936933204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:50,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:50,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:42:50,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615008866] [2023-11-24 21:42:50,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:50,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:42:50,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:50,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:42:50,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:42:50,983 INFO L87 Difference]: Start difference. First operand 6122 states and 10131 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:52,725 INFO L93 Difference]: Finished difference Result 13461 states and 21515 transitions. [2023-11-24 21:42:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:42:52,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2023-11-24 21:42:52,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:52,774 INFO L225 Difference]: With dead ends: 13461 [2023-11-24 21:42:52,774 INFO L226 Difference]: Without dead ends: 9470 [2023-11-24 21:42:52,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:42:52,797 INFO L413 NwaCegarLoop]: 4178 mSDtfsCounter, 4606 mSDsluCounter, 12239 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 16417 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:52,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4633 Valid, 16417 Invalid, 1099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:42:52,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2023-11-24 21:42:53,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 8136. [2023-11-24 21:42:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8136 states, 7244 states have (on average 1.6114025400331309) internal successors, (11673), 7311 states have internal predecessors, (11673), 542 states have call successors, (542), 300 states have call predecessors, (542), 348 states have return successors, (899), 556 states have call predecessors, (899), 542 states have call successors, (899) [2023-11-24 21:42:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8136 states to 8136 states and 13114 transitions. [2023-11-24 21:42:53,414 INFO L78 Accepts]: Start accepts. Automaton has 8136 states and 13114 transitions. Word has length 71 [2023-11-24 21:42:53,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:53,415 INFO L495 AbstractCegarLoop]: Abstraction has 8136 states and 13114 transitions. [2023-11-24 21:42:53,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:42:53,416 INFO L276 IsEmpty]: Start isEmpty. Operand 8136 states and 13114 transitions. [2023-11-24 21:42:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-24 21:42:53,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:53,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:53,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:42:53,440 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:53,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash 919759115, now seen corresponding path program 1 times [2023-11-24 21:42:53,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800773084] [2023-11-24 21:42:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:53,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 21:42:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 21:42:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-24 21:42:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 21:42:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800773084] [2023-11-24 21:42:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800773084] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:42:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188176044] [2023-11-24 21:42:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:53,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:42:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:42:53,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:42:53,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:42:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:53,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:42:53,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:42:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-24 21:42:54,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:42:54,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188176044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:54,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:42:54,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-24 21:42:54,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826295442] [2023-11-24 21:42:54,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:54,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:42:54,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:54,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:42:54,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:54,028 INFO L87 Difference]: Start difference. First operand 8136 states and 13114 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:42:54,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:54,684 INFO L93 Difference]: Finished difference Result 19993 states and 31344 transitions. [2023-11-24 21:42:54,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:42:54,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2023-11-24 21:42:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:54,737 INFO L225 Difference]: With dead ends: 19993 [2023-11-24 21:42:54,737 INFO L226 Difference]: Without dead ends: 13988 [2023-11-24 21:42:54,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:54,761 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4122 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:54,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 4322 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:42:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13988 states. [2023-11-24 21:42:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13988 to 13936. [2023-11-24 21:42:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13936 states, 12184 states have (on average 1.5635259356533158) internal successors, (19050), 12316 states have internal predecessors, (19050), 1054 states have call successors, (1054), 600 states have call predecessors, (1054), 696 states have return successors, (1737), 1051 states have call predecessors, (1737), 1054 states have call successors, (1737) [2023-11-24 21:42:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13936 states to 13936 states and 21841 transitions. [2023-11-24 21:42:55,587 INFO L78 Accepts]: Start accepts. Automaton has 13936 states and 21841 transitions. Word has length 115 [2023-11-24 21:42:55,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:55,587 INFO L495 AbstractCegarLoop]: Abstraction has 13936 states and 21841 transitions. [2023-11-24 21:42:55,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:42:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 13936 states and 21841 transitions. [2023-11-24 21:42:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-24 21:42:55,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:55,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:55,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:42:55,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:42:55,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:55,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash 690437961, now seen corresponding path program 1 times [2023-11-24 21:42:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:55,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432825784] [2023-11-24 21:42:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:55,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:55,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:55,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-24 21:42:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-24 21:42:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 21:42:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-24 21:42:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-24 21:42:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-24 21:42:56,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:56,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432825784] [2023-11-24 21:42:56,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432825784] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:42:56,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778797452] [2023-11-24 21:42:56,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:56,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:42:56,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:42:56,026 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:42:56,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:42:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:56,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 21:42:56,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:42:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-24 21:42:56,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:42:56,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778797452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:56,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 21:42:56,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-11-24 21:42:56,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192323045] [2023-11-24 21:42:56,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:56,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:42:56,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:56,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:42:56,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:56,266 INFO L87 Difference]: Start difference. First operand 13936 states and 21841 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:42:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:57,491 INFO L93 Difference]: Finished difference Result 37241 states and 57483 transitions. [2023-11-24 21:42:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:42:57,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2023-11-24 21:42:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:57,610 INFO L225 Difference]: With dead ends: 37241 [2023-11-24 21:42:57,610 INFO L226 Difference]: Without dead ends: 25436 [2023-11-24 21:42:57,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:42:57,664 INFO L413 NwaCegarLoop]: 4149 mSDtfsCounter, 4127 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4127 SdHoareTripleChecker+Valid, 4322 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:57,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4127 Valid, 4322 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 21:42:57,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25436 states. [2023-11-24 21:42:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25436 to 25334. [2023-11-24 21:42:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25334 states, 21888 states have (on average 1.5295138888888888) internal successors, (33478), 22150 states have internal predecessors, (33478), 2052 states have call successors, (2052), 1200 states have call predecessors, (2052), 1392 states have return successors, (3387), 2015 states have call predecessors, (3387), 2052 states have call successors, (3387) [2023-11-24 21:42:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25334 states to 25334 states and 38917 transitions. [2023-11-24 21:42:59,336 INFO L78 Accepts]: Start accepts. Automaton has 25334 states and 38917 transitions. Word has length 115 [2023-11-24 21:42:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:59,337 INFO L495 AbstractCegarLoop]: Abstraction has 25334 states and 38917 transitions. [2023-11-24 21:42:59,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:42:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 25334 states and 38917 transitions. [2023-11-24 21:42:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-24 21:42:59,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:59,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:59,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:42:59,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7b64579-f722-46b2-8421-61fbcad74062/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:42:59,602 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:59,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:59,603 INFO L85 PathProgramCache]: Analyzing trace with hash 573874123, now seen corresponding path program 1 times [2023-11-24 21:42:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:59,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20175375] [2023-11-24 21:42:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:59,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:42:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:59,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-24 21:42:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-24 21:42:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat