./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.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_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/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_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/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_a280af14-9090-494f-8ca3-15d72c3c6cd2/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 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:56:24,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:56:24,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 21:56:24,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:56:24,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:56:24,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:56:24,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:56:24,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:56:24,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:56:24,636 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:56:24,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 21:56:24,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 21:56:24,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:56:24,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:56:24,639 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:56:24,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:56:24,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 21:56:24,640 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:56:24,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:56:24,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:56:24,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:56:24,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 21:56:24,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 21:56:24,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 21:56:24,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:56:24,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:56:24,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:56:24,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:56:24,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:56:24,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:56:24,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 21:56:24,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 21:56:24,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:24,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:56:24,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 21:56:24,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 21:56:24,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:56:24,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 21:56:24,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 21:56:24,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 21:56:24,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 21:56:24,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 21:56:24,658 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_a280af14-9090-494f-8ca3-15d72c3c6cd2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 [2024-10-31 21:56:24,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:56:24,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:56:24,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:56:24,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:56:24,980 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:56:24,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c Unable to find full path for "g++" [2024-10-31 21:56:27,047 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:56:27,775 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:56:27,777 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c [2024-10-31 21:56:27,824 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/data/92dd395eb/f2f22295f6474340ab2bab98c451bc18/FLAG9b6f43fee [2024-10-31 21:56:27,844 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/data/92dd395eb/f2f22295f6474340ab2bab98c451bc18 [2024-10-31 21:56:27,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:56:27,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:56:27,851 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:27,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:56:27,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:56:27,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:27" (1/1) ... [2024-10-31 21:56:27,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f15e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:27, skipping insertion in model container [2024-10-31 21:56:27,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:27" (1/1) ... [2024-10-31 21:56:28,112 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:56:30,734 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_a280af14-9090-494f-8ca3-15d72c3c6cd2/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2024-10-31 21:56:30,768 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_a280af14-9090-494f-8ca3-15d72c3c6cd2/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2024-10-31 21:56:30,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:31,012 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:56:32,358 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_a280af14-9090-494f-8ca3-15d72c3c6cd2/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2024-10-31 21:56:32,365 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_a280af14-9090-494f-8ca3-15d72c3c6cd2/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2024-10-31 21:56:32,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:32,545 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:56:32,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32 WrapperNode [2024-10-31 21:56:32,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:32,548 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:32,548 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:56:32,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:56:32,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:32,678 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,119 INFO L138 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12819 [2024-10-31 21:56:33,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:33,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:56:33,120 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:56:33,120 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:56:33,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,389 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 21:56:33,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,391 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,799 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:56:33,800 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:56:33,802 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:56:33,802 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:56:33,803 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (1/1) ... [2024-10-31 21:56:33,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 21:56:33,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:33,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 21:56:33,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a280af14-9090-494f-8ca3-15d72c3c6cd2/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 21:56:33,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:56:33,877 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-31 21:56:33,877 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-31 21:56:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-31 21:56:33,879 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-31 21:56:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-31 21:56:33,880 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-31 21:56:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-10-31 21:56:33,880 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-10-31 21:56:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-31 21:56:33,880 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-31 21:56:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-31 21:56:33,881 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-31 21:56:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-31 21:56:33,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-31 21:56:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:56:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:56:33,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:56:34,039 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:56:34,044 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:56:44,804 INFO L? ?]: Removed 1717 outVars from TransFormulas that were not future-live. [2024-10-31 21:56:44,805 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:56:44,875 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:56:44,875 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-31 21:56:44,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:44 BoogieIcfgContainer [2024-10-31 21:56:44,876 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:56:44,878 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 21:56:44,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 21:56:44,882 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 21:56:44,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 09:56:27" (1/3) ... [2024-10-31 21:56:44,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2607761c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:44, skipping insertion in model container [2024-10-31 21:56:44,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:32" (2/3) ... [2024-10-31 21:56:44,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2607761c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 09:56:44, skipping insertion in model container [2024-10-31 21:56:44,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:44" (3/3) ... [2024-10-31 21:56:44,886 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.05.cil-2.c [2024-10-31 21:56:44,905 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 21:56:44,905 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 21:56:45,044 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 21:56:45,054 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;@30baabee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 21:56:45,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 21:56:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 2404 states, 2373 states have (on average 1.8508217446270543) internal successors, (4392), 2378 states have internal predecessors, (4392), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-31 21:56:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-31 21:56:45,086 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:45,087 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, 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 21:56:45,088 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:45,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:45,092 INFO L85 PathProgramCache]: Analyzing trace with hash 528623418, now seen corresponding path program 1 times [2024-10-31 21:56:45,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:45,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195539727] [2024-10-31 21:56:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:56:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-31 21:56:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 21:56:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 21:56:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 21:56:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:45,751 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 21:56:45,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:45,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195539727] [2024-10-31 21:56:45,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195539727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:45,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:45,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:56:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302560663] [2024-10-31 21:56:45,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:45,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 21:56:45,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 21:56:45,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 21:56:45,806 INFO L87 Difference]: Start difference. First operand has 2404 states, 2373 states have (on average 1.8508217446270543) internal successors, (4392), 2378 states have internal predecessors, (4392), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:47,212 INFO L93 Difference]: Finished difference Result 4864 states and 8965 transitions. [2024-10-31 21:56:47,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:56:47,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-10-31 21:56:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:47,248 INFO L225 Difference]: With dead ends: 4864 [2024-10-31 21:56:47,248 INFO L226 Difference]: Without dead ends: 2401 [2024-10-31 21:56:47,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-31 21:56:47,261 INFO L432 NwaCegarLoop]: 4233 mSDtfsCounter, 531 mSDsluCounter, 12313 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 16546 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:47,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 16546 Invalid, 544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-31 21:56:47,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2024-10-31 21:56:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2336. [2024-10-31 21:56:47,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2307 states have (on average 1.8391850888599914) internal successors, (4243), 2310 states have internal predecessors, (4243), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-31 21:56:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 4283 transitions. [2024-10-31 21:56:47,546 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 4283 transitions. Word has length 102 [2024-10-31 21:56:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:47,548 INFO L471 AbstractCegarLoop]: Abstraction has 2336 states and 4283 transitions. [2024-10-31 21:56:47,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-31 21:56:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 4283 transitions. [2024-10-31 21:56:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-31 21:56:47,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:47,557 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, 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 21:56:47,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 21:56:47,558 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:47,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1825761864, now seen corresponding path program 1 times [2024-10-31 21:56:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:47,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947347652] [2024-10-31 21:56:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:47,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:56:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-31 21:56:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 21:56:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 21:56:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:47,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 21:56:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:48,009 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 21:56:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947347652] [2024-10-31 21:56:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947347652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:48,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:48,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 21:56:48,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845000282] [2024-10-31 21:56:48,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:48,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 21:56:48,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:56:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:56:48,021 INFO L87 Difference]: Start difference. First operand 2336 states and 4283 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 21:56:50,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:56:50,282 INFO L93 Difference]: Finished difference Result 2874 states and 5126 transitions. [2024-10-31 21:56:50,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:56:50,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2024-10-31 21:56:50,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 21:56:50,297 INFO L225 Difference]: With dead ends: 2874 [2024-10-31 21:56:50,297 INFO L226 Difference]: Without dead ends: 2672 [2024-10-31 21:56:50,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-31 21:56:50,301 INFO L432 NwaCegarLoop]: 4148 mSDtfsCounter, 4735 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 16587 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-31 21:56:50,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4747 Valid, 16587 Invalid, 1182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-31 21:56:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2024-10-31 21:56:50,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2541. [2024-10-31 21:56:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2541 states, 2491 states have (on average 1.8177438779606583) internal successors, (4528), 2495 states have internal predecessors, (4528), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-31 21:56:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2541 states to 2541 states and 4599 transitions. [2024-10-31 21:56:50,422 INFO L78 Accepts]: Start accepts. Automaton has 2541 states and 4599 transitions. Word has length 102 [2024-10-31 21:56:50,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 21:56:50,423 INFO L471 AbstractCegarLoop]: Abstraction has 2541 states and 4599 transitions. [2024-10-31 21:56:50,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 21:56:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2541 states and 4599 transitions. [2024-10-31 21:56:50,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-31 21:56:50,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 21:56:50,426 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, 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 21:56:50,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 21:56:50,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 21:56:50,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:50,428 INFO L85 PathProgramCache]: Analyzing trace with hash 785390260, now seen corresponding path program 1 times [2024-10-31 21:56:50,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:50,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527146422] [2024-10-31 21:56:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:56:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-31 21:56:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-31 21:56:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-31 21:56:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 21:56:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:56:50,857 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 21:56:50,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:56:50,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527146422] [2024-10-31 21:56:50,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527146422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:56:50,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:56:50,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 21:56:50,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131102708] [2024-10-31 21:56:50,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:56:50,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 21:56:50,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:56:50,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 21:56:50,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 21:56:50,867 INFO L87 Difference]: Start difference. First operand 2541 states and 4599 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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)