./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU --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 161f5eab054e94dd2ff7a7c46df9e7154542593f1f9d4de13027218e1f7c6216 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:56:16,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:56:16,759 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:56:16,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:56:16,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:56:16,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:56:16,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:56:16,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:56:16,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:56:16,809 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:56:16,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:56:16,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:56:16,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:56:16,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:56:16,812 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:56:16,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:56:16,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:56:16,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:56:16,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:56:16,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:56:16,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:56:16,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:56:16,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:56:16,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:56:16,820 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:56:16,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:56:16,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:56:16,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:56:16,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:56:16,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:56:16,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:56:16,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:56:16,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:16,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:56:16,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:56:16,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:56:16,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:56:16,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:56:16,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:56:16,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:56:16,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:56:16,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:56:16,826 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_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 161f5eab054e94dd2ff7a7c46df9e7154542593f1f9d4de13027218e1f7c6216 [2024-10-31 21:56:17,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:56:17,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:56:17,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:56:17,217 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:56:17,218 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:56:17,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c Unable to find full path for "g++" [2024-10-31 21:56:19,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:56:20,280 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:56:20,282 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c [2024-10-31 21:56:20,351 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/data/65ea88cdf/947bbd52f09c4b54bd52b86b6801282c/FLAG011498510 [2024-10-31 21:56:20,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/data/65ea88cdf/947bbd52f09c4b54bd52b86b6801282c [2024-10-31 21:56:20,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:56:20,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:56:20,456 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:20,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:56:20,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:56:20,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:20" (1/1) ... [2024-10-31 21:56:20,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640f1a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:20, skipping insertion in model container [2024-10-31 21:56:20,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:20" (1/1) ... [2024-10-31 21:56:20,709 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:56:23,309 WARN L251 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_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c[381679,381692] [2024-10-31 21:56:23,342 WARN L251 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_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c[383339,383352] [2024-10-31 21:56:23,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:23,577 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:56:24,865 WARN L251 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_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c[381679,381692] [2024-10-31 21:56:24,870 WARN L251 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_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-2.c[383339,383352] [2024-10-31 21:56:24,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:24,975 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:56:24,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24 WrapperNode [2024-10-31 21:56:24,976 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:24,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:24,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:56:24,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:56:24,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:25,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:25,622 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12693 [2024-10-31 21:56:25,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:25,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:56:25,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:56:25,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:56:25,645 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:25,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:25,726 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:25,867 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]. [2024-10-31 21:56:25,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:25,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:26,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:26,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:26,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:26,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:26,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:56:26,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:56:26,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:56:26,207 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:56:26,208 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (1/1) ... [2024-10-31 21:56:26,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:26,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:26,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:56:26,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a9cd8a-0968-4ecf-a462-aaeb16f4ab9d/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:56:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:56:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-31 21:56:26,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-31 21:56:26,288 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 21:56:26,289 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 21:56:26,289 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-31 21:56:26,289 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-31 21:56:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-31 21:56:26,291 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-31 21:56:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-31 21:56:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-31 21:56:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-31 21:56:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-31 21:56:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:56:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:56:26,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:56:26,438 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:56:26,441 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:56:38,492 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2024-10-31 21:56:38,492 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:56:38,556 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:56:38,556 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-31 21:56:38,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:38 BoogieIcfgContainer [2024-10-31 21:56:38,557 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:56:38,562 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:56:38,562 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:56:38,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:56:38,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:56:20" (1/3) ... [2024-10-31 21:56:38,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6785d3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:38, skipping insertion in model container [2024-10-31 21:56:38,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:24" (2/3) ... [2024-10-31 21:56:38,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6785d3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:38, skipping insertion in model container [2024-10-31 21:56:38,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:38" (3/3) ... [2024-10-31 21:56:38,572 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.03.cil-2.c [2024-10-31 21:56:38,592 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:56:38,593 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 21:56:38,732 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:56:38,741 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=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;@778a0abb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:56:38,741 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 21:56:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-31 21:56:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-31 21:56:38,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:38,772 INFO L215 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] [2024-10-31 21:56:38,772 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:38,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:38,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1659781244, now seen corresponding path program 1 times [2024-10-31 21:56:38,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:38,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094797705] [2024-10-31 21:56:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:38,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:56:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:56:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:56:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-31 21:56:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:56:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:39,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:39,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094797705] [2024-10-31 21:56:39,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094797705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:39,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:39,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:56:39,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691767065] [2024-10-31 21:56:39,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:39,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:39,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:39,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:39,556 INFO L87 Difference]: Start difference. First operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-10-31 21:56:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:41,510 INFO L93 Difference]: Finished difference Result 4911 states and 9024 transitions. [2024-10-31 21:56:41,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:41,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2024-10-31 21:56:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:41,546 INFO L225 Difference]: With dead ends: 4911 [2024-10-31 21:56:41,547 INFO L226 Difference]: Without dead ends: 2508 [2024-10-31 21:56:41,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 21:56:41,562 INFO L432 NwaCegarLoop]: 4166 mSDtfsCounter, 4555 mSDsluCounter, 12484 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 16650 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:41,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4565 Valid, 16650 Invalid, 826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-31 21:56:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2024-10-31 21:56:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2423. [2024-10-31 21:56:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2379 states have (on average 1.8263976460697773) internal successors, (4345), 2382 states have internal predecessors, (4345), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2024-10-31 21:56:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4406 transitions. [2024-10-31 21:56:41,791 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4406 transitions. Word has length 79 [2024-10-31 21:56:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:41,792 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 4406 transitions. [2024-10-31 21:56:41,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-10-31 21:56:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4406 transitions. [2024-10-31 21:56:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-31 21:56:41,800 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:41,800 INFO L215 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] [2024-10-31 21:56:41,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:56:41,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:41,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1422733048, now seen corresponding path program 1 times [2024-10-31 21:56:41,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:41,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538079305] [2024-10-31 21:56:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:41,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:41,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:56:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:41,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:56:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:56:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-31 21:56:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:56:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:42,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:42,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538079305] [2024-10-31 21:56:42,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538079305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:42,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:42,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:56:42,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753424140] [2024-10-31 21:56:42,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:42,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:56:42,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:56:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:42,111 INFO L87 Difference]: Start difference. First operand 2423 states and 4406 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-10-31 21:56:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:43,950 INFO L93 Difference]: Finished difference Result 2989 states and 5264 transitions. [2024-10-31 21:56:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 21:56:43,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2024-10-31 21:56:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:43,970 INFO L225 Difference]: With dead ends: 2989 [2024-10-31 21:56:43,970 INFO L226 Difference]: Without dead ends: 2698 [2024-10-31 21:56:43,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-31 21:56:43,976 INFO L432 NwaCegarLoop]: 4194 mSDtfsCounter, 4485 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 20785 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:43,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4495 Valid, 20785 Invalid, 1267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 21:56:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2024-10-31 21:56:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2560. [2024-10-31 21:56:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2497 states have (on average 1.8093712454945936) internal successors, (4518), 2501 states have internal predecessors, (4518), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2024-10-31 21:56:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4605 transitions. [2024-10-31 21:56:44,092 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4605 transitions. Word has length 79 [2024-10-31 21:56:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:44,093 INFO L471 AbstractCegarLoop]: Abstraction has 2560 states and 4605 transitions. [2024-10-31 21:56:44,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-10-31 21:56:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4605 transitions. [2024-10-31 21:56:44,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-31 21:56:44,096 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:44,096 INFO L215 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] [2024-10-31 21:56:44,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:56:44,097 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:44,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:44,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1477125946, now seen corresponding path program 1 times [2024-10-31 21:56:44,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:44,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108415795] [2024-10-31 21:56:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:44,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:56:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:56:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:56:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-31 21:56:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:56:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:56:44,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:44,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108415795] [2024-10-31 21:56:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108415795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:44,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:56:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367093620] [2024-10-31 21:56:44,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:44,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:56:44,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:56:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:44,296 INFO L87 Difference]: Start difference. First operand 2560 states and 4605 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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)