./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.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_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/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_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/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_25ebceff-e7bf-4878-9be3-aed9006c926a/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 b643fcd36e1cc4587225d57a08c62d9a71f0676d69600864fd61c6c0403013f3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:03:26,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:03:26,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 22:03:26,283 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:03:26,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:03:26,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:03:26,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:03:26,314 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:03:26,315 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:03:26,315 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:03:26,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:03:26,317 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:03:26,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:03:26,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:03:26,319 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:03:26,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:03:26,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:03:26,321 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:03:26,321 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:03:26,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:03:26,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:03:26,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:03:26,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:03:26,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:03:26,325 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:03:26,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:03:26,326 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:03:26,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:03:26,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:03:26,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:03:26,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:03:26,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:03:26,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:03:26,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:03:26,331 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:03:26,331 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:03:26,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:03:26,332 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:03:26,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:03:26,333 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:03:26,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:03:26,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:03:26,335 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_25ebceff-e7bf-4878-9be3-aed9006c926a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b643fcd36e1cc4587225d57a08c62d9a71f0676d69600864fd61c6c0403013f3 [2023-11-24 22:03:26,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:03:26,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:03:26,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:03:26,711 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:03:26,712 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:03:26,713 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c [2023-11-24 22:03:29,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:03:30,637 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:03:30,639 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c [2023-11-24 22:03:30,718 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/data/b01c0888f/9ea7e8945b7141b78935e7d5bb56c442/FLAG4ea6396cc [2023-11-24 22:03:30,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/data/b01c0888f/9ea7e8945b7141b78935e7d5bb56c442 [2023-11-24 22:03:30,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:03:30,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:03:30,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:30,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:03:30,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:03:30,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:30" (1/1) ... [2023-11-24 22:03:30,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b84223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:30, skipping insertion in model container [2023-11-24 22:03:30,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:03:30" (1/1) ... [2023-11-24 22:03:31,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:03:33,362 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_25ebceff-e7bf-4878-9be3-aed9006c926a/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c[376251,376264] [2023-11-24 22:03:33,400 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_25ebceff-e7bf-4878-9be3-aed9006c926a/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c[383339,383352] [2023-11-24 22:03:33,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:33,680 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:03:34,937 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_25ebceff-e7bf-4878-9be3-aed9006c926a/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c[376251,376264] [2023-11-24 22:03:34,963 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_25ebceff-e7bf-4878-9be3-aed9006c926a/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c[383339,383352] [2023-11-24 22:03:34,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:03:35,087 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:03:35,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35 WrapperNode [2023-11-24 22:03:35,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:03:35,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:03:35,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:03:35,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:03:35,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:35,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:35,681 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12868 [2023-11-24 22:03:35,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:03:35,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:03:35,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:03:35,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:03:35,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:35,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:35,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:35,985 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 22:03:35,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:35,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:36,130 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:36,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:36,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:36,352 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:36,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:03:36,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:03:36,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:03:36,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:03:36,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (1/1) ... [2023-11-24 22:03:36,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:03:36,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:03:36,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:03:36,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25ebceff-e7bf-4878-9be3-aed9006c926a/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:03:36,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:03:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 22:03:36,522 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 22:03:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 22:03:36,522 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 22:03:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 22:03:36,523 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 22:03:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 22:03:36,523 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 22:03:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 22:03:36,523 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 22:03:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 22:03:36,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 22:03:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:03:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:03:36,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:03:36,650 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:03:36,653 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:03:46,299 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:03:46,472 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:03:46,472 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-24 22:03:46,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:03:46 BoogieIcfgContainer [2023-11-24 22:03:46,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:03:46,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:03:46,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:03:46,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:03:46,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:03:30" (1/3) ... [2023-11-24 22:03:46,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383d5c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:03:46, skipping insertion in model container [2023-11-24 22:03:46,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:03:35" (2/3) ... [2023-11-24 22:03:46,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383d5c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:03:46, skipping insertion in model container [2023-11-24 22:03:46,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:03:46" (3/3) ... [2023-11-24 22:03:46,488 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.06.cil-2.c [2023-11-24 22:03:46,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:03:46,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 22:03:46,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:03:46,640 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;@9e12b43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:03:46,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 22:03:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 2333 states, 2304 states have (on average 1.8815104166666667) internal successors, (4335), 2307 states have internal predecessors, (4335), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-24 22:03:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 22:03:46,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:03:46,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:03:46,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:03:46,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1188096418, now seen corresponding path program 1 times [2023-11-24 22:03:46,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:03:46,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212641385] [2023-11-24 22:03:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:03:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:03:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 22:03:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-24 22:03:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 22:03:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:03:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:47,319 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 22:03:47,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:03:47,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212641385] [2023-11-24 22:03:47,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212641385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:03:47,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:03:47,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:03:47,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340740613] [2023-11-24 22:03:47,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:03:47,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:03:47,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:03:47,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:03:47,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:03:47,375 INFO L87 Difference]: Start difference. First operand has 2333 states, 2304 states have (on average 1.8815104166666667) internal successors, (4335), 2307 states have internal predecessors, (4335), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:03:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:03:49,013 INFO L93 Difference]: Finished difference Result 4728 states and 8858 transitions. [2023-11-24 22:03:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:03:49,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 101 [2023-11-24 22:03:49,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:03:49,048 INFO L225 Difference]: With dead ends: 4728 [2023-11-24 22:03:49,048 INFO L226 Difference]: Without dead ends: 2399 [2023-11-24 22:03:49,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 22:03:49,061 INFO L413 NwaCegarLoop]: 4143 mSDtfsCounter, 553 mSDsluCounter, 12072 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 16215 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:03:49,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 16215 Invalid, 643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 22:03:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2399 states. [2023-11-24 22:03:49,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2399 to 2329. [2023-11-24 22:03:49,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 2301 states have (on average 1.8457192524989134) internal successors, (4247), 2303 states have internal predecessors, (4247), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-24 22:03:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 4287 transitions. [2023-11-24 22:03:49,245 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 4287 transitions. Word has length 101 [2023-11-24 22:03:49,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:03:49,246 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 4287 transitions. [2023-11-24 22:03:49,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 22:03:49,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 4287 transitions. [2023-11-24 22:03:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 22:03:49,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:03:49,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:03:49,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:03:49,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:03:49,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1229807648, now seen corresponding path program 1 times [2023-11-24 22:03:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:03:49,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750400845] [2023-11-24 22:03:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:49,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:03:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:49,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:03:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 22:03:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-24 22:03:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:49,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 22:03:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:03:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:49,701 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 22:03:49,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:03:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750400845] [2023-11-24 22:03:49,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750400845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:03:49,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:03:49,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:03:49,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977070743] [2023-11-24 22:03:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:03:49,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:03:49,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:03:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:03:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:03:49,707 INFO L87 Difference]: Start difference. First operand 2329 states and 4287 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:03:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:03:52,742 INFO L93 Difference]: Finished difference Result 2881 states and 5198 transitions. [2023-11-24 22:03:52,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 22:03:52,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-24 22:03:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:03:52,763 INFO L225 Difference]: With dead ends: 2881 [2023-11-24 22:03:52,763 INFO L226 Difference]: Without dead ends: 2685 [2023-11-24 22:03:52,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 22:03:52,767 INFO L413 NwaCegarLoop]: 4243 mSDtfsCounter, 4743 mSDsluCounter, 16733 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4756 SdHoareTripleChecker+Valid, 20976 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:03:52,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4756 Valid, 20976 Invalid, 2236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 22:03:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2023-11-24 22:03:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2536. [2023-11-24 22:03:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2483 states have (on average 1.829238824003222) internal successors, (4542), 2487 states have internal predecessors, (4542), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2023-11-24 22:03:52,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4623 transitions. [2023-11-24 22:03:52,993 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4623 transitions. Word has length 101 [2023-11-24 22:03:52,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:03:52,993 INFO L495 AbstractCegarLoop]: Abstraction has 2536 states and 4623 transitions. [2023-11-24 22:03:52,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:03:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4623 transitions. [2023-11-24 22:03:52,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 22:03:52,997 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:03:52,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:03:52,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:03:52,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:03:52,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:52,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1188676830, now seen corresponding path program 1 times [2023-11-24 22:03:52,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:03:52,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149117995] [2023-11-24 22:03:52,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:03:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:03:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 22:03:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-24 22:03:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:53,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 22:03:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:53,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:03:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:53,327 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 22:03:53,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:03:53,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149117995] [2023-11-24 22:03:53,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149117995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:03:53,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:03:53,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:03:53,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373345385] [2023-11-24 22:03:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:03:53,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:03:53,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:03:53,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:03:53,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:03:53,337 INFO L87 Difference]: Start difference. First operand 2536 states and 4623 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:03:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:03:56,063 INFO L93 Difference]: Finished difference Result 3580 states and 6330 transitions. [2023-11-24 22:03:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 22:03:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-24 22:03:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:03:56,086 INFO L225 Difference]: With dead ends: 3580 [2023-11-24 22:03:56,086 INFO L226 Difference]: Without dead ends: 3179 [2023-11-24 22:03:56,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 22:03:56,091 INFO L413 NwaCegarLoop]: 4203 mSDtfsCounter, 4768 mSDsluCounter, 16681 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 20884 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:03:56,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4781 Valid, 20884 Invalid, 2031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-24 22:03:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2023-11-24 22:03:56,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2914. [2023-11-24 22:03:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.8008519701810437) internal successors, (5073), 2823 states have internal predecessors, (5073), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-24 22:03:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5224 transitions. [2023-11-24 22:03:56,221 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5224 transitions. Word has length 101 [2023-11-24 22:03:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:03:56,222 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5224 transitions. [2023-11-24 22:03:56,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:03:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5224 transitions. [2023-11-24 22:03:56,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 22:03:56,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:03:56,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:03:56,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:03:56,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:03:56,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:56,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1227159520, now seen corresponding path program 1 times [2023-11-24 22:03:56,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:03:56,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324868015] [2023-11-24 22:03:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:56,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:03:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:03:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 22:03:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:56,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-24 22:03:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:56,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 22:03:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:56,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:03:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:56,538 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 22:03:56,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:03:56,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324868015] [2023-11-24 22:03:56,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324868015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:03:56,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:03:56,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:03:56,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620825606] [2023-11-24 22:03:56,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:03:56,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:03:56,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:03:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:03:56,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:03:56,546 INFO L87 Difference]: Start difference. First operand 2914 states and 5224 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:03:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:03:58,045 INFO L93 Difference]: Finished difference Result 3965 states and 6956 transitions. [2023-11-24 22:03:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:03:58,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-24 22:03:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:03:58,068 INFO L225 Difference]: With dead ends: 3965 [2023-11-24 22:03:58,068 INFO L226 Difference]: Without dead ends: 3184 [2023-11-24 22:03:58,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 22:03:58,074 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4644 mSDsluCounter, 12226 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4658 SdHoareTripleChecker+Valid, 16333 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:03:58,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4658 Valid, 16333 Invalid, 1036 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 22:03:58,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2023-11-24 22:03:58,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 2914. [2023-11-24 22:03:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.7990770323038694) internal successors, (5068), 2823 states have internal predecessors, (5068), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-24 22:03:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5219 transitions. [2023-11-24 22:03:58,226 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5219 transitions. Word has length 101 [2023-11-24 22:03:58,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:03:58,227 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5219 transitions. [2023-11-24 22:03:58,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:03:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5219 transitions. [2023-11-24 22:03:58,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 22:03:58,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:03:58,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:03:58,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:03:58,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:03:58,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1742951582, now seen corresponding path program 1 times [2023-11-24 22:03:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:03:58,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633223864] [2023-11-24 22:03:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:58,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:03:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:03:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 22:03:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-24 22:03:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 22:03:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:03:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:03:58,462 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 22:03:58,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:03:58,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633223864] [2023-11-24 22:03:58,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633223864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:03:58,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:03:58,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:03:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195954471] [2023-11-24 22:03:58,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:03:58,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:03:58,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:03:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:03:58,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:03:58,466 INFO L87 Difference]: Start difference. First operand 2914 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:03:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:03:59,801 INFO L93 Difference]: Finished difference Result 3961 states and 6935 transitions. [2023-11-24 22:03:59,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:03:59,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-24 22:03:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:03:59,823 INFO L225 Difference]: With dead ends: 3961 [2023-11-24 22:03:59,823 INFO L226 Difference]: Without dead ends: 3180 [2023-11-24 22:03:59,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 22:03:59,829 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4642 mSDsluCounter, 12226 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4656 SdHoareTripleChecker+Valid, 16333 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 22:03:59,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4656 Valid, 16333 Invalid, 1022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 22:03:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2023-11-24 22:03:59,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2914. [2023-11-24 22:03:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.797302094426695) internal successors, (5063), 2823 states have internal predecessors, (5063), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-24 22:03:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5214 transitions. [2023-11-24 22:03:59,981 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5214 transitions. Word has length 101 [2023-11-24 22:03:59,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:03:59,982 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5214 transitions. [2023-11-24 22:03:59,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:03:59,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5214 transitions. [2023-11-24 22:03:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 22:03:59,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:03:59,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:03:59,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:03:59,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:03:59,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:03:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash -176193632, now seen corresponding path program 1 times [2023-11-24 22:03:59,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:03:59,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104545122] [2023-11-24 22:03:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:03:59,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:00,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 22:04:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-24 22:04:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:00,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 22:04:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:00,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:04:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:00,240 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 22:04:00,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:00,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104545122] [2023-11-24 22:04:00,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104545122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:00,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:00,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:04:00,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241049429] [2023-11-24 22:04:00,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:04:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:04:00,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:00,245 INFO L87 Difference]: Start difference. First operand 2914 states and 5214 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:04:01,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:01,776 INFO L93 Difference]: Finished difference Result 3956 states and 6912 transitions. [2023-11-24 22:04:01,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:04:01,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-24 22:04:01,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:01,797 INFO L225 Difference]: With dead ends: 3956 [2023-11-24 22:04:01,797 INFO L226 Difference]: Without dead ends: 3175 [2023-11-24 22:04:01,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 22:04:01,803 INFO L413 NwaCegarLoop]: 4107 mSDtfsCounter, 4555 mSDsluCounter, 16280 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 20387 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:01,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4569 Valid, 20387 Invalid, 1093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 22:04:01,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2023-11-24 22:04:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2914. [2023-11-24 22:04:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2914 states, 2817 states have (on average 1.7955271565495208) internal successors, (5058), 2823 states have internal predecessors, (5058), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2023-11-24 22:04:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 5209 transitions. [2023-11-24 22:04:01,918 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 5209 transitions. Word has length 101 [2023-11-24 22:04:01,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:01,918 INFO L495 AbstractCegarLoop]: Abstraction has 2914 states and 5209 transitions. [2023-11-24 22:04:01,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:04:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 5209 transitions. [2023-11-24 22:04:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 22:04:01,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:01,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:01,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:04:01,922 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:01,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:01,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1234031710, now seen corresponding path program 1 times [2023-11-24 22:04:01,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:01,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80586791] [2023-11-24 22:04:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:01,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:02,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 22:04:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:02,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-24 22:04:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 22:04:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:04:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:02,162 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 22:04:02,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:02,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80586791] [2023-11-24 22:04:02,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80586791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:02,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:02,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:04:02,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039526827] [2023-11-24 22:04:02,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:02,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:04:02,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:04:02,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:02,166 INFO L87 Difference]: Start difference. First operand 2914 states and 5209 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:04:04,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:04,778 INFO L93 Difference]: Finished difference Result 4927 states and 8441 transitions. [2023-11-24 22:04:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 22:04:04,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-24 22:04:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:04,818 INFO L225 Difference]: With dead ends: 4927 [2023-11-24 22:04:04,819 INFO L226 Difference]: Without dead ends: 4148 [2023-11-24 22:04:04,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 22:04:04,827 INFO L413 NwaCegarLoop]: 4237 mSDtfsCounter, 4734 mSDsluCounter, 16733 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 20970 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:04,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4747 Valid, 20970 Invalid, 2129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 22:04:04,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2023-11-24 22:04:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3681. [2023-11-24 22:04:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 3496 states have (on average 1.7502860411899313) internal successors, (6119), 3506 states have internal predecessors, (6119), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2023-11-24 22:04:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 6416 transitions. [2023-11-24 22:04:04,994 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 6416 transitions. Word has length 101 [2023-11-24 22:04:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:04,997 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 6416 transitions. [2023-11-24 22:04:04,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:04:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 6416 transitions. [2023-11-24 22:04:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 22:04:05,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:05,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:05,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:04:05,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:05,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:05,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1918433120, now seen corresponding path program 1 times [2023-11-24 22:04:05,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:05,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799300251] [2023-11-24 22:04:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:05,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 22:04:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-24 22:04:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 22:04:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:04:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:05,227 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 22:04:05,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:05,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799300251] [2023-11-24 22:04:05,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799300251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:05,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:05,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:04:05,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126693258] [2023-11-24 22:04:05,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:05,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:04:05,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:05,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:04:05,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:05,230 INFO L87 Difference]: Start difference. First operand 3681 states and 6416 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:04:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:08,129 INFO L93 Difference]: Finished difference Result 8286 states and 13806 transitions. [2023-11-24 22:04:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:04:08,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-24 22:04:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:08,169 INFO L225 Difference]: With dead ends: 8286 [2023-11-24 22:04:08,169 INFO L226 Difference]: Without dead ends: 6740 [2023-11-24 22:04:08,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 22:04:08,179 INFO L413 NwaCegarLoop]: 4236 mSDtfsCounter, 4964 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 20964 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:08,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4984 Valid, 20964 Invalid, 2113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 22:04:08,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2023-11-24 22:04:08,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 5206. [2023-11-24 22:04:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5206 states, 4853 states have (on average 1.6985369874304554) internal successors, (8243), 4871 states have internal predecessors, (8243), 239 states have call successors, (239), 96 states have call predecessors, (239), 112 states have return successors, (352), 254 states have call predecessors, (352), 239 states have call successors, (352) [2023-11-24 22:04:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 8834 transitions. [2023-11-24 22:04:08,444 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 8834 transitions. Word has length 101 [2023-11-24 22:04:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:08,444 INFO L495 AbstractCegarLoop]: Abstraction has 5206 states and 8834 transitions. [2023-11-24 22:04:08,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:04:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 8834 transitions. [2023-11-24 22:04:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-24 22:04:08,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:08,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:08,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:04:08,451 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 22:04:08,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:08,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2136294430, now seen corresponding path program 1 times [2023-11-24 22:04:08,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:04:08,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692859744] [2023-11-24 22:04:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:04:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:08,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 22:04:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-24 22:04:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-24 22:04:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-24 22:04:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-24 22:04:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:08,673 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 22:04:08,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:04:08,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692859744] [2023-11-24 22:04:08,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692859744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:08,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:08,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:04:08,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766058404] [2023-11-24 22:04:08,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:08,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:04:08,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:04:08,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:04:08,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:08,677 INFO L87 Difference]: Start difference. First operand 5206 states and 8834 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 22:04:11,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:11,581 INFO L93 Difference]: Finished difference Result 13949 states and 22916 transitions. [2023-11-24 22:04:11,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 22:04:11,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2023-11-24 22:04:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:11,626 INFO L225 Difference]: With dead ends: 13949 [2023-11-24 22:04:11,626 INFO L226 Difference]: Without dead ends: 10878 [2023-11-24 22:04:11,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-24 22:04:11,642 INFO L413 NwaCegarLoop]: 4235 mSDtfsCounter, 4907 mSDsluCounter, 16728 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4927 SdHoareTripleChecker+Valid, 20963 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:11,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4927 Valid, 20963 Invalid, 2053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-24 22:04:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10878 states.