./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.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_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/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_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/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_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/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 7ec37a095871269c822e7d35e6d840f2de134a68f657807281a5c0e96980df26 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:59:11,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:59:11,603 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:59:11,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:59:11,613 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:59:11,650 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:59:11,650 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:59:11,651 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:59:11,652 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:59:11,657 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:59:11,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:59:11,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:59:11,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:59:11,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:59:11,659 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:59:11,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:59:11,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:59:11,661 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:59:11,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:59:11,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:59:11,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:59:11,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:59:11,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:59:11,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:59:11,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:59:11,664 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:59:11,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:59:11,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:59:11,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:59:11,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:59:11,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:59:11,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:59:11,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:11,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:59:11,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:59:11,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:59:11,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:59:11,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:59:11,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:59:11,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:59:11,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:59:11,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:59:11,673 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_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ec37a095871269c822e7d35e6d840f2de134a68f657807281a5c0e96980df26 [2024-10-31 21:59:12,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:59:12,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:59:12,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:59:12,062 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:59:12,064 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:59:12,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c Unable to find full path for "g++" [2024-10-31 21:59:14,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:59:14,906 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:59:14,908 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c [2024-10-31 21:59:14,978 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/data/c137d0e29/48cf968c830e42ed8626edfbce97e9a7/FLAG860e2f504 [2024-10-31 21:59:15,001 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/data/c137d0e29/48cf968c830e42ed8626edfbce97e9a7 [2024-10-31 21:59:15,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:59:15,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:59:15,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:15,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:59:15,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:59:15,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:15" (1/1) ... [2024-10-31 21:59:15,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f77d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:15, skipping insertion in model container [2024-10-31 21:59:15,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:59:15" (1/1) ... [2024-10-31 21:59:15,267 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:59:17,669 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_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[380323,380336] [2024-10-31 21:59:17,702 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_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[383339,383352] [2024-10-31 21:59:17,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:17,917 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:59:19,180 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_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[380323,380336] [2024-10-31 21:59:19,186 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_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-1.c[383339,383352] [2024-10-31 21:59:19,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:59:19,261 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:59:19,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19 WrapperNode [2024-10-31 21:59:19,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:59:19,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:19,263 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:59:19,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:59:19,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:19,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:19,848 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12699 [2024-10-31 21:59:19,849 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:59:19,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:59:19,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:59:19,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:59:19,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:19,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:19,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:20,118 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 21:59:20,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:20,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:20,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:20,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:20,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:20,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:20,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:59:20,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:59:20,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:59:20,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:59:20,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (1/1) ... [2024-10-31 21:59:20,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:59:20,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:59:20,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:59:20,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d6fbaeb-6e7a-4d41-bdcd-2628223e37b6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:59:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:59:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-31 21:59:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-31 21:59:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 21:59:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 21:59:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-31 21:59:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-31 21:59:20,652 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-31 21:59:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-31 21:59:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-31 21:59:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-31 21:59:20,653 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-31 21:59:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-31 21:59:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-31 21:59:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-31 21:59:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:59:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:59:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:59:20,782 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:59:20,785 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:59:31,534 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2024-10-31 21:59:31,534 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:59:31,607 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:59:31,609 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-31 21:59:31,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:31 BoogieIcfgContainer [2024-10-31 21:59:31,610 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:59:31,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:59:31,612 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:59:31,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:59:31,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:59:15" (1/3) ... [2024-10-31 21:59:31,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd68a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:31, skipping insertion in model container [2024-10-31 21:59:31,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:59:19" (2/3) ... [2024-10-31 21:59:31,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd68a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:59:31, skipping insertion in model container [2024-10-31 21:59:31,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:59:31" (3/3) ... [2024-10-31 21:59:31,622 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.03.cil-1.c [2024-10-31 21:59:31,641 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:59:31,641 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 21:59:31,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:59:31,793 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;@2bb2aca5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:59:31,794 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 21:59:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-31 21:59:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-31 21:59:31,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:31,832 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, 1] [2024-10-31 21:59:31,833 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:59:31,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1300199463, now seen corresponding path program 1 times [2024-10-31 21:59:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:31,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709417248] [2024-10-31 21:59:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:31,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:32,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:32,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:59:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:32,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:59:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:32,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-31 21:59:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:32,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:59:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:32,538 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 21:59:32,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:32,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709417248] [2024-10-31 21:59:32,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709417248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:32,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:32,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:59:32,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405932996] [2024-10-31 21:59:32,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:32,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:59:32,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:32,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:59:32,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:59:32,580 INFO L87 Difference]: Start difference. First operand has 2352 states, 2323 states have (on average 1.8544984933275936) internal successors, (4308), 2328 states have internal predecessors, (4308), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:59:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:34,198 INFO L93 Difference]: Finished difference Result 4933 states and 9066 transitions. [2024-10-31 21:59:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:59:34,202 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-10-31 21:59:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:34,255 INFO L225 Difference]: With dead ends: 4933 [2024-10-31 21:59:34,256 INFO L226 Difference]: Without dead ends: 2522 [2024-10-31 21:59:34,279 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 21:59:34,286 INFO L432 NwaCegarLoop]: 4177 mSDtfsCounter, 4571 mSDsluCounter, 12522 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 16699 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:34,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4581 Valid, 16699 Invalid, 839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-31 21:59:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2024-10-31 21:59:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2435. [2024-10-31 21:59:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2435 states, 2389 states have (on average 1.8271243197990792) internal successors, (4365), 2393 states have internal predecessors, (4365), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2024-10-31 21:59:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 4428 transitions. [2024-10-31 21:59:34,522 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 4428 transitions. Word has length 80 [2024-10-31 21:59:34,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:34,523 INFO L471 AbstractCegarLoop]: Abstraction has 2435 states and 4428 transitions. [2024-10-31 21:59:34,523 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:59:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 4428 transitions. [2024-10-31 21:59:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-31 21:59:34,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:34,530 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, 1] [2024-10-31 21:59:34,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:59:34,531 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:59:34,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1753327317, now seen corresponding path program 1 times [2024-10-31 21:59:34,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:34,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217392052] [2024-10-31 21:59:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:34,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:34,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:34,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:59:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:34,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:59:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:34,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-31 21:59:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:34,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:59:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:34,863 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 21:59:34,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:34,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217392052] [2024-10-31 21:59:34,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217392052] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:34,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:34,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:59:34,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886275185] [2024-10-31 21:59:34,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:34,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:59:34,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:34,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:59:34,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:59:34,876 INFO L87 Difference]: Start difference. First operand 2435 states and 4428 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:59:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:36,775 INFO L93 Difference]: Finished difference Result 3020 states and 5320 transitions. [2024-10-31 21:59:36,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 21:59:36,776 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-10-31 21:59:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:36,792 INFO L225 Difference]: With dead ends: 3020 [2024-10-31 21:59:36,792 INFO L226 Difference]: Without dead ends: 2717 [2024-10-31 21:59:36,795 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 21:59:36,797 INFO L432 NwaCegarLoop]: 4216 mSDtfsCounter, 4499 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4509 SdHoareTripleChecker+Valid, 20890 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:36,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4509 Valid, 20890 Invalid, 1286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 21:59:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2024-10-31 21:59:36,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2577. [2024-10-31 21:59:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2512 states have (on average 1.8105095541401275) internal successors, (4548), 2517 states have internal predecessors, (4548), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2024-10-31 21:59:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 4637 transitions. [2024-10-31 21:59:36,907 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 4637 transitions. Word has length 80 [2024-10-31 21:59:36,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:36,910 INFO L471 AbstractCegarLoop]: Abstraction has 2577 states and 4637 transitions. [2024-10-31 21:59:36,910 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:59:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 4637 transitions. [2024-10-31 21:59:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-31 21:59:36,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:36,918 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, 1] [2024-10-31 21:59:36,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:59:36,918 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:59:36,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash 67147479, now seen corresponding path program 1 times [2024-10-31 21:59:36,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:36,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840871722] [2024-10-31 21:59:36,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:36,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:59:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:59:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-31 21:59:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:59:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:37,145 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 21:59:37,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:37,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840871722] [2024-10-31 21:59:37,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840871722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:37,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:37,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:59:37,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191558649] [2024-10-31 21:59:37,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:37,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:59:37,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:37,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:59:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:59:37,152 INFO L87 Difference]: Start difference. First operand 2577 states and 4637 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:59:39,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:59:39,049 INFO L93 Difference]: Finished difference Result 3529 states and 6085 transitions. [2024-10-31 21:59:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-31 21:59:39,050 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2024-10-31 21:59:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:59:39,066 INFO L225 Difference]: With dead ends: 3529 [2024-10-31 21:59:39,066 INFO L226 Difference]: Without dead ends: 3084 [2024-10-31 21:59:39,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-31 21:59:39,071 INFO L432 NwaCegarLoop]: 4214 mSDtfsCounter, 4497 mSDsluCounter, 16674 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 20888 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-31 21:59:39,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 20888 Invalid, 1284 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-31 21:59:39,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2024-10-31 21:59:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2862. [2024-10-31 21:59:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2759 states have (on average 1.7814425516491483) internal successors, (4915), 2766 states have internal predecessors, (4915), 67 states have call successors, (67), 31 states have call predecessors, (67), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2024-10-31 21:59:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5060 transitions. [2024-10-31 21:59:39,308 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5060 transitions. Word has length 80 [2024-10-31 21:59:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:59:39,310 INFO L471 AbstractCegarLoop]: Abstraction has 2862 states and 5060 transitions. [2024-10-31 21:59:39,310 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:59:39,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5060 transitions. [2024-10-31 21:59:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-31 21:59:39,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:59:39,319 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, 1] [2024-10-31 21:59:39,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 21:59:39,319 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:59:39,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:59:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash 12754581, now seen corresponding path program 1 times [2024-10-31 21:59:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:59:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87041522] [2024-10-31 21:59:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:59:39,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:59:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:59:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-31 21:59:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-31 21:59:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-31 21:59:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-31 21:59:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:59:39,673 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 21:59:39,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:59:39,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87041522] [2024-10-31 21:59:39,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87041522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:59:39,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:59:39,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:59:39,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959697691] [2024-10-31 21:59:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:59:39,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:59:39,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:59:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:59:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:59:39,681 INFO L87 Difference]: Start difference. First operand 2862 states and 5060 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)