./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy5_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy5_ground-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 888cdd97c166bb1845a1f80726a5a1a78f2657e5f80cffe034fcc1253f98195c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 21:56:24,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 21:56:24,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 21:56:24,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 21:56:24,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 21:56:24,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 21:56:24,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 21:56:24,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 21:56:24,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 21:56:24,470 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 21:56:24,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 21:56:24,471 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 21:56:24,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 21:56:24,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 21:56:24,475 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 21:56:24,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 21:56:24,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 21:56:24,476 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 21:56:24,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 21:56:24,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 21:56:24,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 21:56:24,480 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 21:56:24,480 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 21:56:24,480 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 21:56:24,480 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 21:56:24,481 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 21:56:24,481 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 21:56:24,481 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 21:56:24,481 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 21:56:24,482 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 21:56:24,482 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 21:56:24,482 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 21:56:24,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 21:56:24,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 21:56:24,483 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 21:56:24,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 21:56:24,488 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 21:56:24,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 21:56:24,488 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 21:56:24,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 21:56:24,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 21:56:24,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 21:56:24,491 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 888cdd97c166bb1845a1f80726a5a1a78f2657e5f80cffe034fcc1253f98195c [2024-10-13 21:56:24,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 21:56:24,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 21:56:24,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 21:56:24,788 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 21:56:24,788 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 21:56:24,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy5_ground-1.i [2024-10-13 21:56:26,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 21:56:26,471 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 21:56:26,471 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy5_ground-1.i [2024-10-13 21:56:26,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff62072f1/44774487ca76486d9cfbce820baa1c77/FLAG2a972e4af [2024-10-13 21:56:26,492 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff62072f1/44774487ca76486d9cfbce820baa1c77 [2024-10-13 21:56:26,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 21:56:26,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 21:56:26,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 21:56:26,497 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 21:56:26,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 21:56:26,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1f0731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26, skipping insertion in model container [2024-10-13 21:56:26,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 21:56:26,666 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy5_ground-1.i[816,829] [2024-10-13 21:56:26,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 21:56:26,697 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 21:56:26,711 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy5_ground-1.i[816,829] [2024-10-13 21:56:26,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 21:56:26,741 INFO L204 MainTranslator]: Completed translation [2024-10-13 21:56:26,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26 WrapperNode [2024-10-13 21:56:26,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 21:56:26,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 21:56:26,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 21:56:26,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 21:56:26,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,783 INFO L138 Inliner]: procedures = 16, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 128 [2024-10-13 21:56:26,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 21:56:26,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 21:56:26,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 21:56:26,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 21:56:26,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,826 INFO L175 MemorySlicer]: Split 15 memory accesses to 7 slices as follows [2, 3, 2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-10-13 21:56:26,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 21:56:26,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 21:56:26,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 21:56:26,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 21:56:26,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (1/1) ... [2024-10-13 21:56:26,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 21:56:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 21:56:26,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 21:56:26,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 21:56:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 21:56:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 21:56:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 21:56:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 21:56:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 21:56:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 21:56:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-13 21:56:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-13 21:56:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 21:56:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 21:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 21:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 21:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 21:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 21:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-13 21:56:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-13 21:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 21:56:26,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 21:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 21:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 21:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 21:56:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 21:56:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 21:56:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-13 21:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-13 21:56:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 21:56:27,059 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 21:56:27,061 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 21:56:27,258 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-10-13 21:56:27,261 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 21:56:27,326 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 21:56:27,326 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-13 21:56:27,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:56:27 BoogieIcfgContainer [2024-10-13 21:56:27,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 21:56:27,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 21:56:27,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 21:56:27,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 21:56:27,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:56:26" (1/3) ... [2024-10-13 21:56:27,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb3070a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:56:27, skipping insertion in model container [2024-10-13 21:56:27,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:56:26" (2/3) ... [2024-10-13 21:56:27,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb3070a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:56:27, skipping insertion in model container [2024-10-13 21:56:27,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:56:27" (3/3) ... [2024-10-13 21:56:27,342 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy5_ground-1.i [2024-10-13 21:56:27,359 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 21:56:27,360 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 21:56:27,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 21:56:27,449 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;@1e87c4f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 21:56:27,450 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 21:56:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-13 21:56:27,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 21:56:27,460 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 21:56:27,461 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 21:56:27,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 21:56:27,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1707474430, now seen corresponding path program 1 times [2024-10-13 21:56:27,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 21:56:27,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229038522] [2024-10-13 21:56:27,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 21:56:27,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 21:56:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 21:56:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 21:56:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 21:56:27,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229038522] [2024-10-13 21:56:27,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229038522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 21:56:27,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 21:56:27,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 21:56:27,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342302021] [2024-10-13 21:56:27,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 21:56:27,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 21:56:27,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 21:56:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 21:56:27,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 21:56:27,784 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:27,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 21:56:27,847 INFO L93 Difference]: Finished difference Result 39 states and 67 transitions. [2024-10-13 21:56:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 21:56:27,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-13 21:56:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 21:56:27,856 INFO L225 Difference]: With dead ends: 39 [2024-10-13 21:56:27,856 INFO L226 Difference]: Without dead ends: 19 [2024-10-13 21:56:27,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 21:56:27,863 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 21:56:27,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 21:56:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-13 21:56:27,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-13 21:56:27,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:27,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-10-13 21:56:27,897 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 16 [2024-10-13 21:56:27,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 21:56:27,898 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-10-13 21:56:27,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:27,898 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-10-13 21:56:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-13 21:56:27,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 21:56:27,899 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 21:56:27,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 21:56:27,902 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 21:56:27,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 21:56:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash 403801520, now seen corresponding path program 1 times [2024-10-13 21:56:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 21:56:27,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211145101] [2024-10-13 21:56:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 21:56:27,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 21:56:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 21:56:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 21:56:28,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 21:56:28,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211145101] [2024-10-13 21:56:28,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211145101] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 21:56:28,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723262375] [2024-10-13 21:56:28,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 21:56:28,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:28,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 21:56:28,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 21:56:28,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 21:56:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 21:56:28,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 21:56:28,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 21:56:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 21:56:28,175 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 21:56:28,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723262375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 21:56:28,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 21:56:28,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-13 21:56:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634698362] [2024-10-13 21:56:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 21:56:28,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 21:56:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 21:56:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 21:56:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 21:56:28,180 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 21:56:28,227 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-10-13 21:56:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 21:56:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-13 21:56:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 21:56:28,229 INFO L225 Difference]: With dead ends: 38 [2024-10-13 21:56:28,229 INFO L226 Difference]: Without dead ends: 24 [2024-10-13 21:56:28,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 21:56:28,231 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 21:56:28,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 21:56:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-13 21:56:28,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-13 21:56:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-10-13 21:56:28,238 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 17 [2024-10-13 21:56:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 21:56:28,238 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-13 21:56:28,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2024-10-13 21:56:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-13 21:56:28,240 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 21:56:28,240 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] [2024-10-13 21:56:28,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 21:56:28,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:28,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 21:56:28,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 21:56:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash -505883897, now seen corresponding path program 1 times [2024-10-13 21:56:28,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 21:56:28,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939876411] [2024-10-13 21:56:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 21:56:28,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 21:56:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 21:56:28,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 21:56:28,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 21:56:28,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939876411] [2024-10-13 21:56:28,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939876411] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 21:56:28,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990414124] [2024-10-13 21:56:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 21:56:28,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:28,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 21:56:28,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 21:56:28,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 21:56:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 21:56:28,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 21:56:28,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 21:56:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 21:56:28,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 21:56:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 21:56:28,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990414124] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 21:56:28,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 21:56:28,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-13 21:56:28,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277609813] [2024-10-13 21:56:28,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 21:56:28,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 21:56:28,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 21:56:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 21:56:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 21:56:28,762 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:28,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 21:56:28,813 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2024-10-13 21:56:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 21:56:28,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-10-13 21:56:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 21:56:28,814 INFO L225 Difference]: With dead ends: 48 [2024-10-13 21:56:28,814 INFO L226 Difference]: Without dead ends: 27 [2024-10-13 21:56:28,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 21:56:28,815 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 21:56:28,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 21:56:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-13 21:56:28,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-13 21:56:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-10-13 21:56:28,821 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2024-10-13 21:56:28,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 21:56:28,822 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-10-13 21:56:28,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-10-13 21:56:28,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-13 21:56:28,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 21:56:28,823 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 21:56:28,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 21:56:29,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 21:56:29,024 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 21:56:29,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 21:56:29,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1976174271, now seen corresponding path program 2 times [2024-10-13 21:56:29,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 21:56:29,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131398429] [2024-10-13 21:56:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 21:56:29,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 21:56:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 21:56:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-13 21:56:29,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 21:56:29,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131398429] [2024-10-13 21:56:29,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131398429] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 21:56:29,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354555007] [2024-10-13 21:56:29,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 21:56:29,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:29,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 21:56:29,162 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 21:56:29,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 21:56:29,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 21:56:29,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 21:56:29,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 21:56:29,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 21:56:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-13 21:56:29,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 21:56:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-13 21:56:29,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354555007] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 21:56:29,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 21:56:29,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-13 21:56:29,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621332397] [2024-10-13 21:56:29,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 21:56:29,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 21:56:29,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 21:56:29,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 21:56:29,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 21:56:29,311 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 21:56:29,412 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2024-10-13 21:56:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 21:56:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-13 21:56:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 21:56:29,414 INFO L225 Difference]: With dead ends: 60 [2024-10-13 21:56:29,414 INFO L226 Difference]: Without dead ends: 42 [2024-10-13 21:56:29,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 21:56:29,415 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 21:56:29,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 21:56:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-10-13 21:56:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-10-13 21:56:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-10-13 21:56:29,429 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 25 [2024-10-13 21:56:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 21:56:29,429 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-10-13 21:56:29,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-10-13 21:56:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-13 21:56:29,431 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 21:56:29,432 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 21:56:29,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 21:56:29,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:29,636 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 21:56:29,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 21:56:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1687278520, now seen corresponding path program 3 times [2024-10-13 21:56:29,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 21:56:29,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598573016] [2024-10-13 21:56:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 21:56:29,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 21:56:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 21:56:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-13 21:56:29,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 21:56:29,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598573016] [2024-10-13 21:56:29,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598573016] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 21:56:29,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905371219] [2024-10-13 21:56:29,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 21:56:29,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:29,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 21:56:29,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 21:56:29,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 21:56:30,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 21:56:30,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 21:56:30,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 21:56:30,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 21:56:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-13 21:56:30,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 21:56:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-13 21:56:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905371219] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 21:56:30,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 21:56:30,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2024-10-13 21:56:30,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179281082] [2024-10-13 21:56:30,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 21:56:30,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 21:56:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 21:56:30,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 21:56:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-10-13 21:56:30,220 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 21:56:30,410 INFO L93 Difference]: Finished difference Result 109 states and 151 transitions. [2024-10-13 21:56:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 21:56:30,411 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-10-13 21:56:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 21:56:30,412 INFO L225 Difference]: With dead ends: 109 [2024-10-13 21:56:30,412 INFO L226 Difference]: Without dead ends: 73 [2024-10-13 21:56:30,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-10-13 21:56:30,413 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 21:56:30,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 21:56:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-13 21:56:30,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-13 21:56:30,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0972222222222223) internal successors, (79), 72 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2024-10-13 21:56:30,447 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 40 [2024-10-13 21:56:30,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 21:56:30,447 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2024-10-13 21:56:30,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2024-10-13 21:56:30,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-13 21:56:30,450 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 21:56:30,450 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 21:56:30,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 21:56:30,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:30,651 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 21:56:30,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 21:56:30,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1298880912, now seen corresponding path program 4 times [2024-10-13 21:56:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 21:56:30,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149142040] [2024-10-13 21:56:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 21:56:30,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 21:56:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 21:56:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-10-13 21:56:30,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 21:56:30,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149142040] [2024-10-13 21:56:30,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149142040] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 21:56:30,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946717724] [2024-10-13 21:56:30,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 21:56:30,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:30,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 21:56:30,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 21:56:30,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 21:56:31,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 21:56:31,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 21:56:31,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 21:56:31,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 21:56:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-10-13 21:56:31,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 21:56:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-10-13 21:56:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946717724] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 21:56:31,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 21:56:31,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-10-13 21:56:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161573942] [2024-10-13 21:56:31,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 21:56:31,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 21:56:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 21:56:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 21:56:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-13 21:56:31,283 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 21:56:31,335 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2024-10-13 21:56:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 21:56:31,336 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-13 21:56:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 21:56:31,337 INFO L225 Difference]: With dead ends: 146 [2024-10-13 21:56:31,337 INFO L226 Difference]: Without dead ends: 80 [2024-10-13 21:56:31,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-10-13 21:56:31,338 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 21:56:31,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 21:56:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-13 21:56:31,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-13 21:56:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0886075949367089) internal successors, (86), 79 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2024-10-13 21:56:31,349 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 71 [2024-10-13 21:56:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 21:56:31,353 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2024-10-13 21:56:31,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 21:56:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2024-10-13 21:56:31,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-13 21:56:31,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 21:56:31,355 INFO L215 NwaCegarLoop]: trace histogram [12, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 21:56:31,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 21:56:31,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:31,556 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 21:56:31,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 21:56:31,556 INFO L85 PathProgramCache]: Analyzing trace with hash 462936792, now seen corresponding path program 5 times [2024-10-13 21:56:31,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 21:56:31,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708956139] [2024-10-13 21:56:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 21:56:31,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 21:56:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 21:56:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-10-13 21:56:32,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 21:56:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708956139] [2024-10-13 21:56:32,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708956139] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 21:56:32,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044293795] [2024-10-13 21:56:32,069 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 21:56:32,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 21:56:32,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 21:56:32,071 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 21:56:32,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process