./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array7_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/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_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array7_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/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_566d7b6c-655d-47ba-8cfb-20d1d810efad/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 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:16,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:16,784 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:09:16,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:16,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:16,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:16,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:16,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:16,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:16,829 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:16,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:16,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:16,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:16,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:16,831 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:16,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:16,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:16,838 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:16,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:16,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:16,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:16,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:16,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:16,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:16,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:16,841 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:16,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:16,841 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:16,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:16,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:16,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:16,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:16,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:16,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:16,844 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:16,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:16,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:16,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:16,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:16,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:16,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:16,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:16,847 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_566d7b6c-655d-47ba-8cfb-20d1d810efad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa [2024-10-31 22:09:17,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:17,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:17,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:17,237 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:17,237 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:17,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/array-patterns/array7_pattern.c Unable to find full path for "g++" [2024-10-31 22:09:19,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:19,529 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:19,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/sv-benchmarks/c/array-patterns/array7_pattern.c [2024-10-31 22:09:19,537 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/data/f40201b9f/c25cad56dd9d4da884129fe40be770b5/FLAGa15c42242 [2024-10-31 22:09:19,550 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/data/f40201b9f/c25cad56dd9d4da884129fe40be770b5 [2024-10-31 22:09:19,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:19,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:19,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:19,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:19,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:19,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:19,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a07c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19, skipping insertion in model container [2024-10-31 22:09:19,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:19,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:19,855 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_566d7b6c-655d-47ba-8cfb-20d1d810efad/sv-benchmarks/c/array-patterns/array7_pattern.c[1375,1388] [2024-10-31 22:09:19,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:19,887 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:19,897 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_566d7b6c-655d-47ba-8cfb-20d1d810efad/sv-benchmarks/c/array-patterns/array7_pattern.c[1375,1388] [2024-10-31 22:09:19,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:19,941 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:19,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19 WrapperNode [2024-10-31 22:09:19,942 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:19,943 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:19,943 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:19,943 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:19,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:19,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:19,980 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2024-10-31 22:09:19,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:19,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:19,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:19,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:19,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:19,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:19,996 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:20,008 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-10-31 22:09:20,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:20,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:20,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:20,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:20,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:20,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:20,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:20,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:20,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:20,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:20,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (1/1) ... [2024-10-31 22:09:20,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:20,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:20,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:20,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:20,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-31 22:09:20,084 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-31 22:09:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:09:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:09:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:09:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:09:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:09:20,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:09:20,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:20,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:20,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:09:20,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:09:20,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:09:20,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:09:20,171 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:20,173 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:20,387 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-10-31 22:09:20,387 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:20,398 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:20,398 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:09:20,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:20 BoogieIcfgContainer [2024-10-31 22:09:20,399 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:20,401 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:09:20,401 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:09:20,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:09:20,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:19" (1/3) ... [2024-10-31 22:09:20,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c164ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:20, skipping insertion in model container [2024-10-31 22:09:20,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:19" (2/3) ... [2024-10-31 22:09:20,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c164ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:20, skipping insertion in model container [2024-10-31 22:09:20,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:20" (3/3) ... [2024-10-31 22:09:20,407 INFO L112 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2024-10-31 22:09:20,423 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:09:20,423 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:09:20,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:20,493 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;@25072391, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:20,493 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:09:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:09:20,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-31 22:09:20,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:20,509 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:20,509 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:20,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1315107106, now seen corresponding path program 1 times [2024-10-31 22:09:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:20,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366573443] [2024-10-31 22:09:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:20,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:20,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:09:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:20,717 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 22:09:20,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:20,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366573443] [2024-10-31 22:09:20,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366573443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:20,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:20,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:09:20,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037677405] [2024-10-31 22:09:20,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:20,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:09:20,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:20,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:09:20,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:09:20,758 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:09:20,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:20,781 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2024-10-31 22:09:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:09:20,783 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-10-31 22:09:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:20,789 INFO L225 Difference]: With dead ends: 49 [2024-10-31 22:09:20,790 INFO L226 Difference]: Without dead ends: 22 [2024-10-31 22:09:20,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:09:20,797 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:20,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-31 22:09:20,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-31 22:09:20,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:09:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-10-31 22:09:20,847 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2024-10-31 22:09:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:20,848 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-10-31 22:09:20,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:09:20,848 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-10-31 22:09:20,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-31 22:09:20,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:20,850 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:20,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:09:20,851 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:20,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash -877746589, now seen corresponding path program 1 times [2024-10-31 22:09:20,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:20,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943806939] [2024-10-31 22:09:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:20,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:09:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:09:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-31 22:09:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:09:21,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:21,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943806939] [2024-10-31 22:09:21,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943806939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:21,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:21,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:09:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993405111] [2024-10-31 22:09:21,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:21,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:21,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:21,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:21,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:21,342 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:09:21,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:21,377 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-10-31 22:09:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:09:21,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-10-31 22:09:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:21,397 INFO L225 Difference]: With dead ends: 27 [2024-10-31 22:09:21,398 INFO L226 Difference]: Without dead ends: 23 [2024-10-31 22:09:21,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:21,399 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:21,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-10-31 22:09:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-10-31 22:09:21,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:09:21,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-10-31 22:09:21,414 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2024-10-31 22:09:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:21,416 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-10-31 22:09:21,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:09:21,416 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-10-31 22:09:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-31 22:09:21,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:21,422 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:21,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:09:21,423 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:21,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:21,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1647648315, now seen corresponding path program 1 times [2024-10-31 22:09:21,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084047895] [2024-10-31 22:09:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:21,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:09:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 22:09:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-31 22:09:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:09:21,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:21,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084047895] [2024-10-31 22:09:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084047895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:21,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:21,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:09:21,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210949119] [2024-10-31 22:09:21,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:21,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:09:21,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:21,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:09:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:09:21,714 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:09:21,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:21,832 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-10-31 22:09:21,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:09:21,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-10-31 22:09:21,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:21,836 INFO L225 Difference]: With dead ends: 43 [2024-10-31 22:09:21,836 INFO L226 Difference]: Without dead ends: 26 [2024-10-31 22:09:21,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:09:21,841 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:21,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:09:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-31 22:09:21,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2024-10-31 22:09:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:09:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-31 22:09:21,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2024-10-31 22:09:21,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:21,850 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-31 22:09:21,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:09:21,850 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-31 22:09:21,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-31 22:09:21,851 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:21,851 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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 22:09:21,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:09:21,852 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:21,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:21,853 INFO L85 PathProgramCache]: Analyzing trace with hash -475366397, now seen corresponding path program 1 times [2024-10-31 22:09:21,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:21,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151721651] [2024-10-31 22:09:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:21,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:22,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:09:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:22,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-31 22:09:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:22,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-31 22:09:22,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:22,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151721651] [2024-10-31 22:09:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151721651] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538828241] [2024-10-31 22:09:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:22,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:22,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:22,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:09:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:22,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 22:09:22,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 22:09:22,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:09:23,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538828241] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:23,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:23,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 19 [2024-10-31 22:09:23,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698311684] [2024-10-31 22:09:23,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:23,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-31 22:09:23,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:23,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-31 22:09:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-10-31 22:09:23,244 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 19 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 7 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:09:23,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:23,578 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2024-10-31 22:09:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-31 22:09:23,579 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 7 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) Word has length 31 [2024-10-31 22:09:23,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:23,580 INFO L225 Difference]: With dead ends: 73 [2024-10-31 22:09:23,580 INFO L226 Difference]: Without dead ends: 42 [2024-10-31 22:09:23,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-10-31 22:09:23,583 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:23,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 125 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:09:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-31 22:09:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2024-10-31 22:09:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:09:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-10-31 22:09:23,599 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 31 [2024-10-31 22:09:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:23,599 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-10-31 22:09:23,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.6) internal successors, (39), 16 states have internal predecessors, (39), 7 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:09:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-10-31 22:09:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-31 22:09:23,602 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:23,602 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:23,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:09:23,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:23,804 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:23,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:23,806 INFO L85 PathProgramCache]: Analyzing trace with hash -336016897, now seen corresponding path program 2 times [2024-10-31 22:09:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:23,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728575440] [2024-10-31 22:09:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:24,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-31 22:09:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:24,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-31 22:09:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:24,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 22:09:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-31 22:09:24,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:24,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728575440] [2024-10-31 22:09:24,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728575440] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:24,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634947014] [2024-10-31 22:09:24,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:24,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:24,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:24,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:24,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:09:24,229 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:24,229 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:24,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 22:09:24,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:09:24,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-31 22:09:24,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634947014] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:24,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:24,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2024-10-31 22:09:24,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325299121] [2024-10-31 22:09:24,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:24,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:09:24,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:09:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-31 22:09:24,545 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-31 22:09:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:24,793 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2024-10-31 22:09:24,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:09:24,794 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2024-10-31 22:09:24,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:24,796 INFO L225 Difference]: With dead ends: 40 [2024-10-31 22:09:24,796 INFO L226 Difference]: Without dead ends: 36 [2024-10-31 22:09:24,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2024-10-31 22:09:24,798 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:24,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 94 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:09:24,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-10-31 22:09:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-10-31 22:09:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-31 22:09:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-10-31 22:09:24,809 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 35 [2024-10-31 22:09:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:24,810 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-10-31 22:09:24,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-31 22:09:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-10-31 22:09:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-31 22:09:24,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:24,812 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:24,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:09:25,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:25,017 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:25,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash 987546179, now seen corresponding path program 3 times [2024-10-31 22:09:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:25,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679104313] [2024-10-31 22:09:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:25,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 22:09:25,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36321005] [2024-10-31 22:09:25,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:09:25,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:25,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:25,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_566d7b6c-655d-47ba-8cfb-20d1d810efad/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:09:25,473 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-31 22:09:25,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:25,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-10-31 22:09:25,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:25,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-31 22:09:25,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-31 22:09:25,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2024-10-31 22:09:25,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-31 22:09:26,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:09:26,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-31 22:09:26,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-31 22:09:26,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2024-10-31 22:09:29,588 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-10-31 22:09:29,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 510 treesize of output 459 [2024-10-31 22:09:30,304 INFO L349 Elim1Store]: treesize reduction 12, result has 60.0 percent of original size [2024-10-31 22:09:30,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 518 treesize of output 467 [2024-10-31 22:09:30,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:30,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:30,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:30,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:30,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:30,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:30,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:30,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:31,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:31,149 INFO L349 Elim1Store]: treesize reduction 254, result has 0.4 percent of original size [2024-10-31 22:09:31,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 7 select indices, 7 select index equivalence classes, 30 disjoint index pairs (out of 21 index pairs), introduced 15 new quantified variables, introduced 12 case distinctions, treesize of input 427 treesize of output 1517 [2024-10-31 22:09:38,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:09:38,727 INFO L224 Elim1Store]: Index analysis took 657 ms [2024-10-31 22:09:38,994 INFO L349 Elim1Store]: treesize reduction 350, result has 0.3 percent of original size [2024-10-31 22:09:38,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 12 stores, 8 select indices, 8 select index equivalence classes, 39 disjoint index pairs (out of 28 index pairs), introduced 20 new quantified variables, introduced 16 case distinctions, treesize of input 995 treesize of output 3301