./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0cc2344d8bedffb786f66d288e651407abc416f1e22d065ca4595f05e214f2a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 06:21:26,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 06:21:26,638 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-11-27 06:21:26,643 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 06:21:26,644 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 06:21:26,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 06:21:26,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 06:21:26,669 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 06:21:26,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 06:21:26,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 06:21:26,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 06:21:26,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 06:21:26,672 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 06:21:26,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 06:21:26,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 06:21:26,672 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 06:21:26,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 06:21:26,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 06:21:26,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 06:21:26,673 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 06:21:26,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 06:21:26,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 06:21:26,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 06:21:26,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 06:21:26,674 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 06:21:26,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 06:21:26,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 06:21:26,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 06:21:26,674 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-27 06:21:26,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 06:21:26,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-27 06:21:26,676 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-27 06:21:26,676 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-27 06:21:26,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco 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 -> GemCutter 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 -> 0cc2344d8bedffb786f66d288e651407abc416f1e22d065ca4595f05e214f2a3 [2024-11-27 06:21:26,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 06:21:27,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 06:21:27,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 06:21:27,009 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 06:21:27,010 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 06:21:27,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/../../sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i [2024-11-27 06:21:30,224 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/data/4932688d3/93a161c0e512423484e3a75552aa7645/FLAG0d232d3ae [2024-11-27 06:21:30,603 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 06:21:30,607 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i [2024-11-27 06:21:30,628 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/data/4932688d3/93a161c0e512423484e3a75552aa7645/FLAG0d232d3ae [2024-11-27 06:21:30,651 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/data/4932688d3/93a161c0e512423484e3a75552aa7645 [2024-11-27 06:21:30,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 06:21:30,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 06:21:30,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 06:21:30,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 06:21:30,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 06:21:30,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:21:30" (1/1) ... [2024-11-27 06:21:30,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12166a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:30, skipping insertion in model container [2024-11-27 06:21:30,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:21:30" (1/1) ... [2024-11-27 06:21:30,720 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 06:21:31,136 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[30297,30310] [2024-11-27 06:21:31,142 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[30487,30500] [2024-11-27 06:21:31,152 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[31293,31306] [2024-11-27 06:21:31,155 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[31584,31597] [2024-11-27 06:21:31,157 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[31812,31825] [2024-11-27 06:21:31,162 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[32286,32299] [2024-11-27 06:21:31,171 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[32509,32522] [2024-11-27 06:21:31,173 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[32707,32720] [2024-11-27 06:21:31,174 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[32902,32915] [2024-11-27 06:21:31,180 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[33095,33108] [2024-11-27 06:21:31,185 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[33516,33529] [2024-11-27 06:21:31,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 06:21:31,210 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 06:21:31,255 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[30297,30310] [2024-11-27 06:21:31,263 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[30487,30500] [2024-11-27 06:21:31,266 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[31293,31306] [2024-11-27 06:21:31,268 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[31584,31597] [2024-11-27 06:21:31,270 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[31812,31825] [2024-11-27 06:21:31,272 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[32286,32299] [2024-11-27 06:21:31,274 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[32509,32522] [2024-11-27 06:21:31,275 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[32707,32720] [2024-11-27 06:21:31,276 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[32902,32915] [2024-11-27 06:21:31,277 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[33095,33108] [2024-11-27 06:21:31,282 WARN L250 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_5b5d588b-badc-47c7-8995-dbd24adb2ff1/sv-benchmarks/c/pthread-ext/43_NetBSD_sysmon_power_sliced.i[33516,33529] [2024-11-27 06:21:31,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 06:21:31,316 INFO L204 MainTranslator]: Completed translation [2024-11-27 06:21:31,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31 WrapperNode [2024-11-27 06:21:31,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 06:21:31,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 06:21:31,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 06:21:31,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 06:21:31,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,389 INFO L138 Inliner]: procedures = 180, calls = 48, calls flagged for inlining = 43, calls inlined = 68, statements flattened = 454 [2024-11-27 06:21:31,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 06:21:31,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 06:21:31,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 06:21:31,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 06:21:31,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,432 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 06:21:31,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 06:21:31,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 06:21:31,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 06:21:31,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (1/1) ... [2024-11-27 06:21:31,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-27 06:21:31,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/z3 [2024-11-27 06:21:31,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-27 06:21:31,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-27 06:21:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-27 06:21:31,559 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-27 06:21:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 06:21:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-27 06:21:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 06:21:31,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 06:21:31,561 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 06:21:31,715 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 06:21:31,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 06:21:32,409 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 06:21:32,409 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 06:21:32,762 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 06:21:32,764 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-27 06:21:32,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:21:32 BoogieIcfgContainer [2024-11-27 06:21:32,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 06:21:32,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 06:21:32,768 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 06:21:32,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 06:21:32,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 06:21:30" (1/3) ... [2024-11-27 06:21:32,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24aad6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:21:32, skipping insertion in model container [2024-11-27 06:21:32,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:21:31" (2/3) ... [2024-11-27 06:21:32,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24aad6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 06:21:32, skipping insertion in model container [2024-11-27 06:21:32,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 06:21:32" (3/3) ... [2024-11-27 06:21:32,776 INFO L128 eAbstractionObserver]: Analyzing ICFG 43_NetBSD_sysmon_power_sliced.i [2024-11-27 06:21:32,793 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 06:21:32,795 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 43_NetBSD_sysmon_power_sliced.i that has 2 procedures, 124 locations, 1 initial locations, 3 loop locations, and 11 error locations. [2024-11-27 06:21:32,795 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 06:21:32,895 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 06:21:32,965 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:21:32,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-27 06:21:32,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/z3 [2024-11-27 06:21:32,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-11-27 06:21:32,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b5d588b-badc-47c7-8995-dbd24adb2ff1/bin/ugemcutter-verify-fG3NtRWMco/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-11-27 06:21:33,048 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-27 06:21:33,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2024-11-27 06:21:33,078 INFO L333 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@65ac792, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:21:33,078 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-27 06:21:33,326 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2024-11-27 06:21:33,326 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:21:33,327 INFO L139 ounterexampleChecker]: Examining path program with hash 1876025800, occurence #1 [2024-11-27 06:21:33,328 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-27 06:21:33,328 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:21:33,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:21:33,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1359487448, now seen corresponding path program 1 times [2024-11-27 06:21:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:21:33,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138435687] [2024-11-27 06:21:33,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:21:33,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:21:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 06:21:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:21:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 06:21:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138435687] [2024-11-27 06:21:33,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138435687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 06:21:33,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 06:21:33,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 06:21:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296653546] [2024-11-27 06:21:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 06:21:33,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 06:21:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 06:21:33,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 06:21:33,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 06:21:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:21:33,739 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-27 06:21:33,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 06:21:33,741 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:21:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:21:34,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 06:21:34,044 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2024-11-27 06:21:34,044 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:21:34,044 INFO L139 ounterexampleChecker]: Examining path program with hash -696357372, occurence #1 [2024-11-27 06:21:34,044 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-27 06:21:34,045 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:21:34,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:21:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1572818640, now seen corresponding path program 1 times [2024-11-27 06:21:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:21:34,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662468873] [2024-11-27 06:21:34,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:21:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:21:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 06:21:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:21:34,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 06:21:34,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662468873] [2024-11-27 06:21:34,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662468873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 06:21:34,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 06:21:34,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 06:21:34,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677018485] [2024-11-27 06:21:34,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 06:21:34,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 06:21:34,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 06:21:34,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 06:21:34,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 06:21:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:21:34,195 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-27 06:21:34,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 06:21:34,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:21:34,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:21:36,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:21:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:21:36,345 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2024-11-27 06:21:36,345 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2024-11-27 06:21:36,345 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2024-11-27 06:21:36,345 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2024-11-27 06:21:36,345 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2024-11-27 06:21:36,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2024-11-27 06:21:36,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2024-11-27 06:21:36,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2024-11-27 06:21:36,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2024-11-27 06:21:36,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2024-11-27 06:21:36,346 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2024-11-27 06:21:36,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 06:21:36,352 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-27 06:21:36,354 INFO L319 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2024-11-27 06:21:36,364 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:21:36,365 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-27 06:21:36,369 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-11-27 06:21:36,370 INFO L333 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@65ac792, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:21:36,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 06:21:36,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 06:21:36,379 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:21:36,379 INFO L139 ounterexampleChecker]: Examining path program with hash -1881623906, occurence #1 [2024-11-27 06:21:36,379 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-27 06:21:36,379 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:21:36,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:21:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1701969035, now seen corresponding path program 1 times [2024-11-27 06:21:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:21:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514474112] [2024-11-27 06:21:36,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:21:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:21:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 06:21:36,404 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 06:21:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 06:21:36,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 06:21:36,436 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 06:21:36,437 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-11-27 06:21:36,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 06:21:36,439 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-27 06:21:36,439 INFO L319 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2024-11-27 06:21:36,441 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 06:21:36,441 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-27 06:21:36,545 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 06:21:36,554 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:21:36,567 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-27 06:21:36,567 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-11-27 06:21:36,568 INFO L333 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@65ac792, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:21:36,568 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 06:21:36,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-27 06:21:36,767 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:21:36,767 INFO L139 ounterexampleChecker]: Examining path program with hash -1718091604, occurence #1 [2024-11-27 06:21:36,767 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-27 06:21:36,767 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:21:36,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:21:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1632047321, now seen corresponding path program 1 times [2024-11-27 06:21:36,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:21:36,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642788796] [2024-11-27 06:21:36,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:21:36,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:21:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 06:21:36,789 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 06:21:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 06:21:36,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 06:21:36,809 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 06:21:36,809 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-11-27 06:21:36,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 06:21:36,811 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-27 06:21:36,812 INFO L319 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2024-11-27 06:21:36,812 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-27 06:21:36,812 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-27 06:21:36,902 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-27 06:21:36,911 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:21:36,933 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-27 06:21:36,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2024-11-27 06:21:36,933 INFO L333 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, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, 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;@65ac792, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 06:21:36,934 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-27 06:21:37,421 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2024-11-27 06:21:37,421 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:21:37,421 INFO L139 ounterexampleChecker]: Examining path program with hash -98745277, occurence #1 [2024-11-27 06:21:37,421 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-27 06:21:37,421 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:21:37,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:21:37,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1977953865, now seen corresponding path program 1 times [2024-11-27 06:21:37,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:21:37,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824905535] [2024-11-27 06:21:37,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:21:37,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:21:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 06:21:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:21:37,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 06:21:37,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824905535] [2024-11-27 06:21:37,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824905535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 06:21:37,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 06:21:37,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 06:21:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954383410] [2024-11-27 06:21:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 06:21:37,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 06:21:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 06:21:37,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 06:21:37,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 06:21:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:21:37,591 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-27 06:21:37,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 06:21:37,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:21:46,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:21:46,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 06:21:46,121 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err3ASSERT_VIOLATIONERROR_FUNCTION, thr1Err5ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2024-11-27 06:21:46,122 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2024-11-27 06:21:46,122 INFO L139 ounterexampleChecker]: Examining path program with hash -266006966, occurence #1 [2024-11-27 06:21:46,122 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2024-11-27 06:21:46,122 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2024-11-27 06:21:46,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 06:21:46,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1001909324, now seen corresponding path program 1 times [2024-11-27 06:21:46,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 06:21:46,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159628073] [2024-11-27 06:21:46,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 06:21:46,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 06:21:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 06:21:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 06:21:46,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 06:21:46,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159628073] [2024-11-27 06:21:46,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159628073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 06:21:46,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 06:21:46,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 06:21:46,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151450403] [2024-11-27 06:21:46,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 06:21:46,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 06:21:46,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 06:21:46,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 06:21:46,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 06:21:46,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 06:21:46,299 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-27 06:21:46,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 06:21:46,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-11-27 06:21:46,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.