./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/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_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/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_13deb773-5db9-4f5f-8470-ea58e74605fc/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 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:42:03,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:42:03,914 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:42:03,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:42:03,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:42:03,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:42:03,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:42:03,976 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:42:03,977 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:42:03,982 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:42:03,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:42:03,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:42:03,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:42:03,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:42:03,986 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:42:03,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:42:03,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:42:03,988 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:42:03,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:42:03,989 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:42:03,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:42:03,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:42:03,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:42:03,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:42:03,993 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:42:03,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:42:03,994 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:42:03,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:42:03,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:42:03,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:42:03,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:42:03,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:42:03,998 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:42:03,998 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:42:03,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:42:03,999 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:42:03,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:42:03,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:42:04,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:42:04,000 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:42:04,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:42:04,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:42:04,001 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_13deb773-5db9-4f5f-8470-ea58e74605fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18ad5ec6bc1db1d6d896db79319bb0ca45f8aff62ac630628a891f63c8426bb4 [2023-11-24 21:42:04,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:42:04,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:42:04,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:42:04,383 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:42:04,383 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:42:04,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2023-11-24 21:42:07,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:42:08,034 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:42:08,036 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/sv-benchmarks/c/eca-rers2012/Problem12_label33.c [2023-11-24 21:42:08,071 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/data/1fed02162/e9ca4d2f81244812be8dc52c725d6fbc/FLAG7ed94406c [2023-11-24 21:42:08,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/data/1fed02162/e9ca4d2f81244812be8dc52c725d6fbc [2023-11-24 21:42:08,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:42:08,101 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:42:08,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:42:08,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:42:08,112 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:42:08,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:42:08" (1/1) ... [2023-11-24 21:42:08,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aac29e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:08, skipping insertion in model container [2023-11-24 21:42:08,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:42:08" (1/1) ... [2023-11-24 21:42:08,257 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:42:08,521 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_13deb773-5db9-4f5f-8470-ea58e74605fc/sv-benchmarks/c/eca-rers2012/Problem12_label33.c[6146,6159] [2023-11-24 21:42:09,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:42:09,715 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:42:09,750 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_13deb773-5db9-4f5f-8470-ea58e74605fc/sv-benchmarks/c/eca-rers2012/Problem12_label33.c[6146,6159] [2023-11-24 21:42:10,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:42:10,434 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:42:10,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10 WrapperNode [2023-11-24 21:42:10,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:42:10,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:42:10,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:42:10,437 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:42:10,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:10,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,007 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4758 [2023-11-24 21:42:11,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:42:11,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:42:11,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:42:11,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:42:11,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,087 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,248 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 21:42:11,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,564 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:42:11,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:42:11,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:42:11,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:42:11,757 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (1/1) ... [2023-11-24 21:42:11,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:42:11,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:42:11,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:42:11,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13deb773-5db9-4f5f-8470-ea58e74605fc/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:42:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:42:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:42:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:42:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:42:11,933 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:42:11,937 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:42:17,572 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:42:17,671 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:42:17,673 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:42:17,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:42:17 BoogieIcfgContainer [2023-11-24 21:42:17,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:42:17,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:42:17,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:42:17,682 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:42:17,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:42:08" (1/3) ... [2023-11-24 21:42:17,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1419cb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:42:17, skipping insertion in model container [2023-11-24 21:42:17,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:42:10" (2/3) ... [2023-11-24 21:42:17,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1419cb3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:42:17, skipping insertion in model container [2023-11-24 21:42:17,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:42:17" (3/3) ... [2023-11-24 21:42:17,689 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label33.c [2023-11-24 21:42:17,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:42:17,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:42:17,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:42:17,805 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;@59d360d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:42:17,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:42:17,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:17,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 21:42:17,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:17,823 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] [2023-11-24 21:42:17,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:17,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:17,829 INFO L85 PathProgramCache]: Analyzing trace with hash 98019347, now seen corresponding path program 1 times [2023-11-24 21:42:17,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:17,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494526874] [2023-11-24 21:42:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:17,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:18,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:18,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494526874] [2023-11-24 21:42:18,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494526874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:18,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:18,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:42:18,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831414180] [2023-11-24 21:42:18,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:18,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:42:18,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:18,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:42:18,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:42:18,141 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:18,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:18,271 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2023-11-24 21:42:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:42:18,273 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-24 21:42:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:18,301 INFO L225 Difference]: With dead ends: 1511 [2023-11-24 21:42:18,301 INFO L226 Difference]: Without dead ends: 754 [2023-11-24 21:42:18,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:42:18,315 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:18,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:42:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-24 21:42:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2023-11-24 21:42:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2023-11-24 21:42:18,426 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 48 [2023-11-24 21:42:18,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:18,427 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2023-11-24 21:42:18,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:18,427 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2023-11-24 21:42:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-24 21:42:18,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:18,429 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] [2023-11-24 21:42:18,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:42:18,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:18,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:18,430 INFO L85 PathProgramCache]: Analyzing trace with hash -451008006, now seen corresponding path program 1 times [2023-11-24 21:42:18,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:18,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957301963] [2023-11-24 21:42:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:18,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:18,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:18,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957301963] [2023-11-24 21:42:18,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957301963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:18,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:18,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:42:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595499864] [2023-11-24 21:42:18,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:18,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:42:18,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:18,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:42:18,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:42:18,830 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:28,388 INFO L93 Difference]: Finished difference Result 3009 states and 5747 transitions. [2023-11-24 21:42:28,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:42:28,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-24 21:42:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:28,406 INFO L225 Difference]: With dead ends: 3009 [2023-11-24 21:42:28,406 INFO L226 Difference]: Without dead ends: 2256 [2023-11-24 21:42:28,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:42:28,410 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 2213 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5355 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2213 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 6508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:28,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2213 Valid, 691 Invalid, 6508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5355 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-24 21:42:28,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-11-24 21:42:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2256. [2023-11-24 21:42:28,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5751662971175167) internal successors, (3552), 2255 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3552 transitions. [2023-11-24 21:42:28,494 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3552 transitions. Word has length 48 [2023-11-24 21:42:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:28,495 INFO L495 AbstractCegarLoop]: Abstraction has 2256 states and 3552 transitions. [2023-11-24 21:42:28,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:28,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3552 transitions. [2023-11-24 21:42:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-24 21:42:28,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:28,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:28,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:42:28,501 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:28,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1429324662, now seen corresponding path program 1 times [2023-11-24 21:42:28,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:28,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399552462] [2023-11-24 21:42:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:28,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:42:29,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:29,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399552462] [2023-11-24 21:42:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399552462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:29,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:29,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:42:29,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863427757] [2023-11-24 21:42:29,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:29,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:42:29,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:29,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:42:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:42:29,044 INFO L87 Difference]: Start difference. First operand 2256 states and 3552 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:34,781 INFO L93 Difference]: Finished difference Result 6050 states and 9915 transitions. [2023-11-24 21:42:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:42:34,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-11-24 21:42:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:34,810 INFO L225 Difference]: With dead ends: 6050 [2023-11-24 21:42:34,810 INFO L226 Difference]: Without dead ends: 3758 [2023-11-24 21:42:34,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:42:34,823 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 703 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3096 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:34,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 685 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3096 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-24 21:42:34,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2023-11-24 21:42:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3007. [2023-11-24 21:42:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.4321357285429142) internal successors, (4305), 3006 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4305 transitions. [2023-11-24 21:42:34,937 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4305 transitions. Word has length 119 [2023-11-24 21:42:34,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:34,940 INFO L495 AbstractCegarLoop]: Abstraction has 3007 states and 4305 transitions. [2023-11-24 21:42:34,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4305 transitions. [2023-11-24 21:42:34,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-24 21:42:34,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:34,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:34,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:42:34,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:34,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:34,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1042463450, now seen corresponding path program 1 times [2023-11-24 21:42:34,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:34,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323911327] [2023-11-24 21:42:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:34,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-24 21:42:35,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:35,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323911327] [2023-11-24 21:42:35,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323911327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:35,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:35,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:42:35,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726215012] [2023-11-24 21:42:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:35,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:42:35,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:42:35,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:42:35,485 INFO L87 Difference]: Start difference. First operand 3007 states and 4305 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:39,354 INFO L93 Difference]: Finished difference Result 8266 states and 11518 transitions. [2023-11-24 21:42:39,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:42:39,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2023-11-24 21:42:39,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:39,386 INFO L225 Difference]: With dead ends: 8266 [2023-11-24 21:42:39,386 INFO L226 Difference]: Without dead ends: 5260 [2023-11-24 21:42:39,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:42:39,392 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:39,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 425 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-24 21:42:39,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2023-11-24 21:42:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 5260. [2023-11-24 21:42:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 5259 states have (on average 1.1983266780756798) internal successors, (6302), 5259 states have internal predecessors, (6302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 6302 transitions. [2023-11-24 21:42:39,520 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 6302 transitions. Word has length 258 [2023-11-24 21:42:39,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:39,522 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 6302 transitions. [2023-11-24 21:42:39,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 6302 transitions. [2023-11-24 21:42:39,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-24 21:42:39,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:39,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:39,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:42:39,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:39,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1181953077, now seen corresponding path program 1 times [2023-11-24 21:42:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:39,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430313123] [2023-11-24 21:42:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:39,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-24 21:42:40,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:40,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430313123] [2023-11-24 21:42:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430313123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:40,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:40,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:42:40,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589800216] [2023-11-24 21:42:40,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:40,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:42:40,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:40,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:42:40,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:42:40,292 INFO L87 Difference]: Start difference. First operand 5260 states and 6302 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:45,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:45,479 INFO L93 Difference]: Finished difference Result 12060 states and 15067 transitions. [2023-11-24 21:42:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:42:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2023-11-24 21:42:45,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:45,520 INFO L225 Difference]: With dead ends: 12060 [2023-11-24 21:42:45,521 INFO L226 Difference]: Without dead ends: 7515 [2023-11-24 21:42:45,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:42:45,528 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 775 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 4261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:45,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 324 Invalid, 4261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3719 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-24 21:42:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7515 states. [2023-11-24 21:42:45,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7515 to 7513. [2023-11-24 21:42:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7513 states, 7512 states have (on average 1.1813099041533546) internal successors, (8874), 7512 states have internal predecessors, (8874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7513 states to 7513 states and 8874 transitions. [2023-11-24 21:42:45,754 INFO L78 Accepts]: Start accepts. Automaton has 7513 states and 8874 transitions. Word has length 260 [2023-11-24 21:42:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:45,755 INFO L495 AbstractCegarLoop]: Abstraction has 7513 states and 8874 transitions. [2023-11-24 21:42:45,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7513 states and 8874 transitions. [2023-11-24 21:42:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-24 21:42:45,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:45,764 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:45,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:42:45,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:45,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1080142752, now seen corresponding path program 1 times [2023-11-24 21:42:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:45,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971450033] [2023-11-24 21:42:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:45,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 21:42:47,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:47,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971450033] [2023-11-24 21:42:47,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971450033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:47,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:47,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:42:47,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194154534] [2023-11-24 21:42:47,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:47,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:42:47,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:47,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:42:47,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:42:47,209 INFO L87 Difference]: Start difference. First operand 7513 states and 8874 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:42:51,378 INFO L93 Difference]: Finished difference Result 16527 states and 20145 transitions. [2023-11-24 21:42:51,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:42:51,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 337 [2023-11-24 21:42:51,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:42:51,427 INFO L225 Difference]: With dead ends: 16527 [2023-11-24 21:42:51,427 INFO L226 Difference]: Without dead ends: 9766 [2023-11-24 21:42:51,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:42:51,436 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 825 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 3019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 989 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:42:51,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 137 Invalid, 3019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [989 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-24 21:42:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2023-11-24 21:42:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2023-11-24 21:42:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.207373271889401) internal successors, (11790), 9765 states have internal predecessors, (11790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 11790 transitions. [2023-11-24 21:42:51,643 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 11790 transitions. Word has length 337 [2023-11-24 21:42:51,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:42:51,644 INFO L495 AbstractCegarLoop]: Abstraction has 9766 states and 11790 transitions. [2023-11-24 21:42:51,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:42:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 11790 transitions. [2023-11-24 21:42:51,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-24 21:42:51,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:42:51,652 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:42:51,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:42:51,653 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:42:51,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:42:51,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1289531876, now seen corresponding path program 1 times [2023-11-24 21:42:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:42:51,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303979641] [2023-11-24 21:42:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:42:51,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:42:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:42:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-24 21:42:52,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:42:52,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303979641] [2023-11-24 21:42:52,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303979641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:42:52,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:42:52,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:42:52,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067257592] [2023-11-24 21:42:52,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:42:52,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:42:52,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:42:52,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:42:52,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:42:52,545 INFO L87 Difference]: Start difference. First operand 9766 states and 11790 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)