./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.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_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/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_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/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_56862f73-e027-45e4-9efc-43353581b433/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 eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:50:57,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:50:58,079 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:50:58,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:50:58,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:50:58,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:50:58,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:50:58,135 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:50:58,136 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:50:58,141 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:50:58,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:50:58,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:50:58,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:50:58,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:50:58,146 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:50:58,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:50:58,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:50:58,147 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:50:58,148 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:50:58,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:50:58,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:50:58,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:50:58,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:50:58,152 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:50:58,152 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:50:58,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:50:58,153 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:50:58,154 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:50:58,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:50:58,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:50:58,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:50:58,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:50:58,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:50:58,157 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:50:58,157 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:50:58,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:50:58,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:50:58,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:50:58,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:50:58,158 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:50:58,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:50:58,159 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:50:58,159 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_56862f73-e027-45e4-9efc-43353581b433/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e [2023-11-24 21:50:58,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:50:58,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:50:58,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:50:58,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:50:58,506 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:50:58,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2023-11-24 21:51:01,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:51:02,448 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:51:02,450 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2023-11-24 21:51:02,509 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/data/7c9453c7a/9e3c9b22f69e4d6f9911e2021ca689f2/FLAG63dcded16 [2023-11-24 21:51:02,523 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/data/7c9453c7a/9e3c9b22f69e4d6f9911e2021ca689f2 [2023-11-24 21:51:02,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:51:02,529 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:51:02,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:51:02,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:51:02,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:51:02,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:51:02" (1/1) ... [2023-11-24 21:51:02,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1d6a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:02, skipping insertion in model container [2023-11-24 21:51:02,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:51:02" (1/1) ... [2023-11-24 21:51:02,856 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:51:05,497 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_56862f73-e027-45e4-9efc-43353581b433/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2023-11-24 21:51:05,535 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_56862f73-e027-45e4-9efc-43353581b433/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2023-11-24 21:51:05,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:51:05,877 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:51:07,121 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_56862f73-e027-45e4-9efc-43353581b433/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2023-11-24 21:51:07,129 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_56862f73-e027-45e4-9efc-43353581b433/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2023-11-24 21:51:07,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:51:07,272 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:51:07,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07 WrapperNode [2023-11-24 21:51:07,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:51:07,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:51:07,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:51:07,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:51:07,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:07,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:07,798 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13048 [2023-11-24 21:51:07,798 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:51:07,799 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:51:07,799 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:51:07,799 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:51:07,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:07,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:07,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:08,054 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 21:51:08,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:08,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:08,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:08,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:08,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:08,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:08,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:51:08,568 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:51:08,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:51:08,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:51:08,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (1/1) ... [2023-11-24 21:51:08,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:51:08,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:51:08,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:51:08,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56862f73-e027-45e4-9efc-43353581b433/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:51:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:51:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:51:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:51:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:51:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:51:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:51:08,695 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:51:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:51:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:51:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:51:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:51:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:51:08,696 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:51:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:51:08,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:51:08,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:51:08,903 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:51:08,906 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:51:18,770 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:51:18,890 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:51:18,890 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-11-24 21:51:18,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:51:18 BoogieIcfgContainer [2023-11-24 21:51:18,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:51:18,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:51:18,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:51:18,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:51:18,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:51:02" (1/3) ... [2023-11-24 21:51:18,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ab07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:51:18, skipping insertion in model container [2023-11-24 21:51:18,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:51:07" (2/3) ... [2023-11-24 21:51:18,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ab07c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:51:18, skipping insertion in model container [2023-11-24 21:51:18,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:51:18" (3/3) ... [2023-11-24 21:51:18,902 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.09.cil-1.c [2023-11-24 21:51:18,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:51:18,923 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:51:19,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:51:19,029 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;@60955bf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:51:19,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:51:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 2402 states, 2370 states have (on average 1.8784810126582279) internal successors, (4452), 2373 states have internal predecessors, (4452), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-24 21:51:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 21:51:19,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:19,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:19,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:19,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1643509846, now seen corresponding path program 1 times [2023-11-24 21:51:19,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:19,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996776196] [2023-11-24 21:51:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:19,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:19,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-24 21:51:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-24 21:51:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-24 21:51:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-24 21:51:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:19,842 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 21:51:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:19,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996776196] [2023-11-24 21:51:19,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996776196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:19,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:19,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:51:19,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986213165] [2023-11-24 21:51:19,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:19,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:51:19,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:51:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:51:19,903 INFO L87 Difference]: Start difference. First operand has 2402 states, 2370 states have (on average 1.8784810126582279) internal successors, (4452), 2373 states have internal predecessors, (4452), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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 21:51:22,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:22,174 INFO L93 Difference]: Finished difference Result 4898 states and 9162 transitions. [2023-11-24 21:51:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:51:22,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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 131 [2023-11-24 21:51:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:22,215 INFO L225 Difference]: With dead ends: 4898 [2023-11-24 21:51:22,215 INFO L226 Difference]: Without dead ends: 2498 [2023-11-24 21:51:22,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:51:22,232 INFO L413 NwaCegarLoop]: 4200 mSDtfsCounter, 764 mSDsluCounter, 12138 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 16338 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:22,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 16338 Invalid, 886 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:51:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2023-11-24 21:51:22,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2398. [2023-11-24 21:51:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2367 states have (on average 1.8411491339247994) internal successors, (4358), 2369 states have internal predecessors, (4358), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-24 21:51:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4404 transitions. [2023-11-24 21:51:22,405 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4404 transitions. Word has length 131 [2023-11-24 21:51:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:22,405 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4404 transitions. [2023-11-24 21:51:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 3 states have internal predecessors, (121), 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 21:51:22,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4404 transitions. [2023-11-24 21:51:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 21:51:22,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:22,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:22,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:51:22,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:22,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash 406899052, now seen corresponding path program 1 times [2023-11-24 21:51:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13759330] [2023-11-24 21:51:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-24 21:51:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-24 21:51:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-24 21:51:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-24 21:51:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:22,778 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 21:51:22,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:22,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13759330] [2023-11-24 21:51:22,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13759330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:22,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:22,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:51:22,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453565894] [2023-11-24 21:51:22,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:22,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:51:22,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:22,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:51:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:51:22,784 INFO L87 Difference]: Start difference. First operand 2398 states and 4404 transitions. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:26,239 INFO L93 Difference]: Finished difference Result 3135 states and 5628 transitions. [2023-11-24 21:51:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:51:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2023-11-24 21:51:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:26,260 INFO L225 Difference]: With dead ends: 3135 [2023-11-24 21:51:26,261 INFO L226 Difference]: Without dead ends: 2873 [2023-11-24 21:51:26,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:51:26,265 INFO L413 NwaCegarLoop]: 4171 mSDtfsCounter, 5107 mSDsluCounter, 12498 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5123 SdHoareTripleChecker+Valid, 16669 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:26,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5123 Valid, 16669 Invalid, 1887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-24 21:51:26,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2023-11-24 21:51:26,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2674. [2023-11-24 21:51:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2618 states have (on average 1.8216195569136746) internal successors, (4769), 2621 states have internal predecessors, (4769), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2023-11-24 21:51:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4854 transitions. [2023-11-24 21:51:26,378 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4854 transitions. Word has length 131 [2023-11-24 21:51:26,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:26,379 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4854 transitions. [2023-11-24 21:51:26,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:26,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4854 transitions. [2023-11-24 21:51:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 21:51:26,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:26,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:26,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:51:26,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:26,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1501391760, now seen corresponding path program 1 times [2023-11-24 21:51:26,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:26,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040935420] [2023-11-24 21:51:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:26,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-24 21:51:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-24 21:51:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-24 21:51:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-24 21:51:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:26,791 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 21:51:26,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040935420] [2023-11-24 21:51:26,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040935420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:26,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:26,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:26,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731287228] [2023-11-24 21:51:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:26,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:26,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:26,795 INFO L87 Difference]: Start difference. First operand 2674 states and 4854 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:31,451 INFO L93 Difference]: Finished difference Result 3800 states and 6722 transitions. [2023-11-24 21:51:31,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:51:31,452 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2023-11-24 21:51:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:31,475 INFO L225 Difference]: With dead ends: 3800 [2023-11-24 21:51:31,475 INFO L226 Difference]: Without dead ends: 3262 [2023-11-24 21:51:31,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:51:31,481 INFO L413 NwaCegarLoop]: 4330 mSDtfsCounter, 5140 mSDsluCounter, 17046 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21376 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:31,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5156 Valid, 21376 Invalid, 2965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-24 21:51:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2023-11-24 21:51:31,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2929. [2023-11-24 21:51:31,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2848 states have (on average 1.8040730337078652) internal successors, (5138), 2852 states have internal predecessors, (5138), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-11-24 21:51:31,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 5261 transitions. [2023-11-24 21:51:31,629 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 5261 transitions. Word has length 131 [2023-11-24 21:51:31,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:31,630 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 5261 transitions. [2023-11-24 21:51:31,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:31,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 5261 transitions. [2023-11-24 21:51:31,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 21:51:31,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:31,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:31,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:51:31,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:31,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1030035410, now seen corresponding path program 1 times [2023-11-24 21:51:31,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:31,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199897813] [2023-11-24 21:51:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:31,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-24 21:51:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:31,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-24 21:51:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-24 21:51:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:32,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-24 21:51:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:32,022 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 21:51:32,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:32,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199897813] [2023-11-24 21:51:32,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199897813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:32,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:32,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496662690] [2023-11-24 21:51:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:32,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:32,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:32,033 INFO L87 Difference]: Start difference. First operand 2929 states and 5261 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:34,202 INFO L93 Difference]: Finished difference Result 4067 states and 7159 transitions. [2023-11-24 21:51:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:51:34,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2023-11-24 21:51:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:34,224 INFO L225 Difference]: With dead ends: 4067 [2023-11-24 21:51:34,225 INFO L226 Difference]: Without dead ends: 3274 [2023-11-24 21:51:34,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:51:34,230 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4804 mSDsluCounter, 16442 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 20600 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:34,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4821 Valid, 20600 Invalid, 1543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-24 21:51:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2023-11-24 21:51:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2929. [2023-11-24 21:51:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2848 states have (on average 1.8030196629213484) internal successors, (5135), 2852 states have internal predecessors, (5135), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-11-24 21:51:34,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 5258 transitions. [2023-11-24 21:51:34,355 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 5258 transitions. Word has length 131 [2023-11-24 21:51:34,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:34,356 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 5258 transitions. [2023-11-24 21:51:34,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:34,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 5258 transitions. [2023-11-24 21:51:34,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 21:51:34,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:34,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:34,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:51:34,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:34,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:34,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1133581164, now seen corresponding path program 1 times [2023-11-24 21:51:34,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:34,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260402929] [2023-11-24 21:51:34,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:34,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-24 21:51:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-24 21:51:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-24 21:51:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-24 21:51:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:34,629 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 21:51:34,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:34,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260402929] [2023-11-24 21:51:34,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260402929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:34,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:34,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:34,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070708067] [2023-11-24 21:51:34,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:34,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:34,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:34,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:34,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:34,633 INFO L87 Difference]: Start difference. First operand 2929 states and 5258 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:36,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:36,693 INFO L93 Difference]: Finished difference Result 4063 states and 7142 transitions. [2023-11-24 21:51:36,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:51:36,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2023-11-24 21:51:36,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:36,714 INFO L225 Difference]: With dead ends: 4063 [2023-11-24 21:51:36,715 INFO L226 Difference]: Without dead ends: 3270 [2023-11-24 21:51:36,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:51:36,722 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4921 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4938 SdHoareTripleChecker+Valid, 16513 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:36,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4938 Valid, 16513 Invalid, 1404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-24 21:51:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2023-11-24 21:51:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2929. [2023-11-24 21:51:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2848 states have (on average 1.8019662921348314) internal successors, (5132), 2852 states have internal predecessors, (5132), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-11-24 21:51:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 5255 transitions. [2023-11-24 21:51:36,849 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 5255 transitions. Word has length 131 [2023-11-24 21:51:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:36,849 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 5255 transitions. [2023-11-24 21:51:36,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:36,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 5255 transitions. [2023-11-24 21:51:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 21:51:36,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:36,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:36,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:51:36,853 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:36,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:36,853 INFO L85 PathProgramCache]: Analyzing trace with hash 94996590, now seen corresponding path program 1 times [2023-11-24 21:51:36,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:36,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475529558] [2023-11-24 21:51:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:36,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:36,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:37,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-24 21:51:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-24 21:51:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:37,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-24 21:51:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:37,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-24 21:51:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:37,131 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 21:51:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:37,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475529558] [2023-11-24 21:51:37,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475529558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:37,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:37,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:37,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522471149] [2023-11-24 21:51:37,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:37,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:37,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:37,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:37,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:37,135 INFO L87 Difference]: Start difference. First operand 2929 states and 5255 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:38,881 INFO L93 Difference]: Finished difference Result 4059 states and 7125 transitions. [2023-11-24 21:51:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:51:38,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2023-11-24 21:51:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:38,902 INFO L225 Difference]: With dead ends: 4059 [2023-11-24 21:51:38,902 INFO L226 Difference]: Without dead ends: 3266 [2023-11-24 21:51:38,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:51:38,907 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4919 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4936 SdHoareTripleChecker+Valid, 16513 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:38,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4936 Valid, 16513 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 21:51:38,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2023-11-24 21:51:39,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2929. [2023-11-24 21:51:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2848 states have (on average 1.8009129213483146) internal successors, (5129), 2852 states have internal predecessors, (5129), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2023-11-24 21:51:39,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 5252 transitions. [2023-11-24 21:51:39,026 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 5252 transitions. Word has length 131 [2023-11-24 21:51:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:39,027 INFO L495 AbstractCegarLoop]: Abstraction has 2929 states and 5252 transitions. [2023-11-24 21:51:39,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:39,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 5252 transitions. [2023-11-24 21:51:39,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 21:51:39,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:39,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:39,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:51:39,031 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:39,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1878168788, now seen corresponding path program 1 times [2023-11-24 21:51:39,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:39,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4538457] [2023-11-24 21:51:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:39,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-24 21:51:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-24 21:51:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-24 21:51:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-24 21:51:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:39,327 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 21:51:39,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:39,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4538457] [2023-11-24 21:51:39,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4538457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:39,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:39,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802027154] [2023-11-24 21:51:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:39,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:39,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:39,331 INFO L87 Difference]: Start difference. First operand 2929 states and 5252 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:42,943 INFO L93 Difference]: Finished difference Result 4761 states and 8249 transitions. [2023-11-24 21:51:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:51:42,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2023-11-24 21:51:42,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:42,987 INFO L225 Difference]: With dead ends: 4761 [2023-11-24 21:51:42,991 INFO L226 Difference]: Without dead ends: 3968 [2023-11-24 21:51:42,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:51:42,999 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 5191 mSDsluCounter, 16647 mSDsCounter, 0 mSdLazyCounter, 2352 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5207 SdHoareTripleChecker+Valid, 20827 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:43,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5207 Valid, 20827 Invalid, 2439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 2352 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-24 21:51:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2023-11-24 21:51:43,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3452. [2023-11-24 21:51:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3321 states have (on average 1.7705510388437218) internal successors, (5880), 3327 states have internal predecessors, (5880), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-11-24 21:51:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 6083 transitions. [2023-11-24 21:51:43,159 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 6083 transitions. Word has length 131 [2023-11-24 21:51:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:43,162 INFO L495 AbstractCegarLoop]: Abstraction has 3452 states and 6083 transitions. [2023-11-24 21:51:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 6083 transitions. [2023-11-24 21:51:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 21:51:43,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:43,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:43,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:51:43,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:43,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:43,167 INFO L85 PathProgramCache]: Analyzing trace with hash 274938030, now seen corresponding path program 1 times [2023-11-24 21:51:43,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:43,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075468122] [2023-11-24 21:51:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:43,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:51:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:43,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-24 21:51:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:43,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-24 21:51:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-24 21:51:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-24 21:51:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:51:43,487 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 21:51:43,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:51:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075468122] [2023-11-24 21:51:43,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075468122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:51:43,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:51:43,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:51:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467430845] [2023-11-24 21:51:43,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:51:43,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:51:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:51:43,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:51:43,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:51:43,490 INFO L87 Difference]: Start difference. First operand 3452 states and 6083 transitions. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:51:45,461 INFO L93 Difference]: Finished difference Result 5271 states and 9068 transitions. [2023-11-24 21:51:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:51:45,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 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 131 [2023-11-24 21:51:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:51:45,483 INFO L225 Difference]: With dead ends: 5271 [2023-11-24 21:51:45,483 INFO L226 Difference]: Without dead ends: 3955 [2023-11-24 21:51:45,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:51:45,490 INFO L413 NwaCegarLoop]: 4158 mSDtfsCounter, 4918 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 16513 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:51:45,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4935 Valid, 16513 Invalid, 1368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 21:51:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2023-11-24 21:51:45,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3452. [2023-11-24 21:51:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3321 states have (on average 1.7690454682324601) internal successors, (5875), 3327 states have internal predecessors, (5875), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2023-11-24 21:51:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 6078 transitions. [2023-11-24 21:51:45,679 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 6078 transitions. Word has length 131 [2023-11-24 21:51:45,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:51:45,679 INFO L495 AbstractCegarLoop]: Abstraction has 3452 states and 6078 transitions. [2023-11-24 21:51:45,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:51:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 6078 transitions. [2023-11-24 21:51:45,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-24 21:51:45,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:51:45,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:51:45,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:51:45,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:51:45,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:51:45,685 INFO L85 PathProgramCache]: Analyzing trace with hash -348343572, now seen corresponding path program 1 times [2023-11-24 21:51:45,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:51:45,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147341074] [2023-11-24 21:51:45,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:51:45,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:51:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat