./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copy5_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../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.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:18:20,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:18:20,426 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:18:20,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:18:20,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:18:20,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:18:20,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:18:20,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:18:20,466 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:18:20,467 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:18:20,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:18:20,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:18:20,469 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:18:20,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:18:20,471 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:18:20,471 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:18:20,471 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:18:20,472 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:18:20,472 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:18:20,472 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:18:20,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:18:20,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:18:20,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:18:20,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:18:20,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:18:20,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:18:20,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:18:20,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:18:20,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:18:20,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:18:20,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:18:20,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:18:20,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:18:20,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:18:20,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:18:20,478 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:18:20,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:18:20,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:18:20,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:18:20,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:18:20,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:18:20,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:18:20,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 888cdd97c166bb1845a1f80726a5a1a78f2657e5f80cffe034fcc1253f98195c [2024-11-11 15:18:20,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:18:20,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:18:20,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:18:20,750 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:18:20,750 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:18:20,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copy5_ground-1.i [2024-11-11 15:18:22,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:18:22,290 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:18:22,291 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy5_ground-1.i [2024-11-11 15:18:22,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66808ab88/6eb00a268b5f404eaa5cedc60084fd89/FLAGaff7ac95d [2024-11-11 15:18:22,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66808ab88/6eb00a268b5f404eaa5cedc60084fd89 [2024-11-11 15:18:22,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:18:22,312 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:18:22,313 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:18:22,313 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:18:22,318 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:18:22,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c61de7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22, skipping insertion in model container [2024-11-11 15:18:22,320 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,343 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:18:22,530 WARN L250 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] [2024-11-11 15:18:22,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:18:22,557 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:18:22,568 WARN L250 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] [2024-11-11 15:18:22,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:18:22,595 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:18:22,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22 WrapperNode [2024-11-11 15:18:22,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:18:22,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:18:22,610 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:18:22,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:18:22,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,643 INFO L138 Inliner]: procedures = 16, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 128 [2024-11-11 15:18:22,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:18:22,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:18:22,644 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:18:22,644 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:18:22,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,675 INFO L175 MemorySlicer]: Split 15 memory accesses to 7 slices as follows [2, 2, 3, 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]. [2024-11-11 15:18:22,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:18:22,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:18:22,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:18:22,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:18:22,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (1/1) ... [2024-11-11 15:18:22,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:18:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:18:22,749 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) [2024-11-11 15:18:22,752 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 [2024-11-11 15:18:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:18:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:18:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:18:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 15:18:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-11 15:18:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-11 15:18:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-11 15:18:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-11 15:18:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:18:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:18:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:18:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 15:18:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-11 15:18:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-11 15:18:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-11 15:18:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-11 15:18:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:18:22,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:18:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:18:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:18:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 15:18:22,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-11 15:18:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-11 15:18:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-11 15:18:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-11 15:18:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:18:22,908 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:18:22,910 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:18:23,075 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-11 15:18:23,075 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:18:23,091 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:18:23,092 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-11 15:18:23,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:18:23 BoogieIcfgContainer [2024-11-11 15:18:23,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:18:23,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:18:23,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:18:23,101 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:18:23,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:18:22" (1/3) ... [2024-11-11 15:18:23,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527174c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:18:23, skipping insertion in model container [2024-11-11 15:18:23,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:18:22" (2/3) ... [2024-11-11 15:18:23,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527174c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:18:23, skipping insertion in model container [2024-11-11 15:18:23,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:18:23" (3/3) ... [2024-11-11 15:18:23,105 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copy5_ground-1.i [2024-11-11 15:18:23,119 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:18:23,119 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:18:23,172 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:18:23,178 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;@6b743754, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:18:23,179 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:18:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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) [2024-11-11 15:18:23,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-11 15:18:23,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:18:23,190 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:18:23,191 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:18:23,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:18:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash -18882701, now seen corresponding path program 1 times [2024-11-11 15:18:23,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:18:23,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004184661] [2024-11-11 15:18:23,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:18:23,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:18:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:18:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:18:23,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:18:23,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004184661] [2024-11-11 15:18:23,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004184661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:18:23,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:18:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 15:18:23,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475085237] [2024-11-11 15:18:23,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:18:23,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:18:23,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:18:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:18:23,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:18:23,524 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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 5.666666666666667) 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) [2024-11-11 15:18:23,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:18:23,550 INFO L93 Difference]: Finished difference Result 58 states and 86 transitions. [2024-11-11 15:18:23,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:18:23,553 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 [2024-11-11 15:18:23,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:18:23,559 INFO L225 Difference]: With dead ends: 58 [2024-11-11 15:18:23,559 INFO L226 Difference]: Without dead ends: 28 [2024-11-11 15:18:23,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:18:23,564 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:18:23,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:18:23,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-11 15:18:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2024-11-11 15:18:23,592 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) [2024-11-11 15:18:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-11 15:18:23,594 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2024-11-11 15:18:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:18:23,594 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-11 15:18:23,595 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) [2024-11-11 15:18:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-11 15:18:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-11 15:18:23,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:18:23,596 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:18:23,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:18:23,596 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:18:23,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:18:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1592499797, now seen corresponding path program 1 times [2024-11-11 15:18:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:18:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026363346] [2024-11-11 15:18:23,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:18:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:18:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:18:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:18:23,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:18:23,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026363346] [2024-11-11 15:18:23,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026363346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:18:23,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072311013] [2024-11-11 15:18:23,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:18:23,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:18:23,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:18:23,727 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) [2024-11-11 15:18:23,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 15:18:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:18:23,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 15:18:23,826 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:18:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 15:18:23,848 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 15:18:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072311013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:18:23,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 15:18:23,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-11 15:18:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246158893] [2024-11-11 15:18:23,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:18:23,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:18:23,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:18:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:18:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:18:23,852 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-11 15:18:23,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:18:23,913 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2024-11-11 15:18:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:18:23,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2024-11-11 15:18:23,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:18:23,915 INFO L225 Difference]: With dead ends: 56 [2024-11-11 15:18:23,915 INFO L226 Difference]: Without dead ends: 37 [2024-11-11 15:18:23,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-11 15:18:23,916 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:18:23,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:18:23,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-11 15:18:23,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2024-11-11 15:18:23,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 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) [2024-11-11 15:18:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-11 15:18:23,925 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 19 [2024-11-11 15:18:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:18:23,925 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-11 15:18:23,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2024-11-11 15:18:23,926 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-11 15:18:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 15:18:23,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:18:23,927 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:18:23,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 15:18:24,127 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 [2024-11-11 15:18:24,128 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:18:24,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:18:24,130 INFO L85 PathProgramCache]: Analyzing trace with hash 722749857, now seen corresponding path program 1 times [2024-11-11 15:18:24,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:18:24,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244974972] [2024-11-11 15:18:24,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:18:24,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:18:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:18:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:18:24,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:18:24,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244974972] [2024-11-11 15:18:24,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244974972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:18:24,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564086823] [2024-11-11 15:18:24,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:18:24,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:18:24,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:18:24,300 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) [2024-11-11 15:18:24,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 15:18:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:18:24,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 15:18:24,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:18:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:18:24,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:18:24,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:18:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564086823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:18:24,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:18:24,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-11 15:18:24,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748692532] [2024-11-11 15:18:24,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:18:24,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 15:18:24,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:18:24,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 15:18:24,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:18:24,471 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2024-11-11 15:18:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:18:24,506 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2024-11-11 15:18:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-11 15:18:24,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 29 [2024-11-11 15:18:24,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:18:24,507 INFO L225 Difference]: With dead ends: 65 [2024-11-11 15:18:24,507 INFO L226 Difference]: Without dead ends: 38 [2024-11-11 15:18:24,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:18:24,509 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:18:24,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 86 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:18:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-11 15:18:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-11 15:18:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 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) [2024-11-11 15:18:24,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-11 15:18:24,514 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 29 [2024-11-11 15:18:24,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:18:24,515 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-11 15:18:24,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2024-11-11 15:18:24,515 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-11 15:18:24,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-11 15:18:24,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:18:24,516 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:18:24,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 15:18:24,716 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 [2024-11-11 15:18:24,717 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:18:24,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:18:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1141885403, now seen corresponding path program 2 times [2024-11-11 15:18:24,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:18:24,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986653381] [2024-11-11 15:18:24,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:18:24,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:18:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:18:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-11 15:18:24,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:18:24,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986653381] [2024-11-11 15:18:24,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986653381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:18:24,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308407296] [2024-11-11 15:18:24,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:18:24,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:18:24,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:18:24,852 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) [2024-11-11 15:18:24,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 15:18:24,958 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:18:24,958 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:18:24,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:18:24,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:18:25,029 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:18:25,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:18:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-11 15:18:25,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308407296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:18:25,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:18:25,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-11 15:18:25,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324043343] [2024-11-11 15:18:25,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:18:25,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-11 15:18:25,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:18:25,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-11 15:18:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:18:25,125 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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) [2024-11-11 15:18:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:18:25,247 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2024-11-11 15:18:25,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-11 15:18:25,248 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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 35 [2024-11-11 15:18:25,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:18:25,249 INFO L225 Difference]: With dead ends: 92 [2024-11-11 15:18:25,249 INFO L226 Difference]: Without dead ends: 65 [2024-11-11 15:18:25,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-11 15:18:25,250 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:18:25,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 65 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:18:25,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-11 15:18:25,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2024-11-11 15:18:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 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) [2024-11-11 15:18:25,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2024-11-11 15:18:25,257 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 35 [2024-11-11 15:18:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:18:25,258 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2024-11-11 15:18:25,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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) [2024-11-11 15:18:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2024-11-11 15:18:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-11 15:18:25,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:18:25,260 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:18:25,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 15:18:25,460 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 [2024-11-11 15:18:25,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:18:25,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:18:25,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1504312005, now seen corresponding path program 3 times [2024-11-11 15:18:25,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:18:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659117892] [2024-11-11 15:18:25,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:18:25,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:18:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:18:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-11 15:18:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:18:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659117892] [2024-11-11 15:18:25,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659117892] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:18:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659811413] [2024-11-11 15:18:25,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:18:25,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:18:25,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:18:25,849 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) [2024-11-11 15:18:25,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 15:18:25,961 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-11 15:18:25,962 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:18:25,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-11 15:18:25,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:18:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-11 15:18:26,011 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:18:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-11 15:18:26,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659811413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:18:26,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:18:26,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-11 15:18:26,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021241647] [2024-11-11 15:18:26,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:18:26,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-11 15:18:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:18:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-11 15:18:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-11 15:18:26,068 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 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) [2024-11-11 15:18:26,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:18:26,270 INFO L93 Difference]: Finished difference Result 140 states and 172 transitions. [2024-11-11 15:18:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-11 15:18:26,271 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 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) Word has length 57 [2024-11-11 15:18:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:18:26,272 INFO L225 Difference]: With dead ends: 140 [2024-11-11 15:18:26,274 INFO L226 Difference]: Without dead ends: 103 [2024-11-11 15:18:26,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-11 15:18:26,275 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:18:26,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 65 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:18:26,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-11 15:18:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2024-11-11 15:18:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.0693069306930694) internal successors, (108), 101 states have internal predecessors, (108), 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) [2024-11-11 15:18:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2024-11-11 15:18:26,290 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 57 [2024-11-11 15:18:26,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:18:26,291 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2024-11-11 15:18:26,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.157894736842105) internal successors, (79), 19 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) [2024-11-11 15:18:26,291 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2024-11-11 15:18:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-11 15:18:26,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:18:26,293 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:18:26,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 15:18:26,493 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 [2024-11-11 15:18:26,494 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:18:26,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:18:26,494 INFO L85 PathProgramCache]: Analyzing trace with hash 432076507, now seen corresponding path program 4 times [2024-11-11 15:18:26,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:18:26,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713220954] [2024-11-11 15:18:26,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:18:26,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:18:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:18:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-11 15:18:26,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:18:26,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713220954] [2024-11-11 15:18:26,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713220954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:18:26,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921834182] [2024-11-11 15:18:26,862 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:18:26,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:18:26,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:18:26,864 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) [2024-11-11 15:18:26,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 15:18:27,016 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:18:27,016 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:18:27,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-11 15:18:27,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:18:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-11 15:18:27,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:18:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-11 15:18:27,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921834182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:18:27,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:18:27,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-11 15:18:27,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330994250] [2024-11-11 15:18:27,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:18:27,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-11 15:18:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:18:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-11 15:18:27,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-11 15:18:27,363 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 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) [2024-11-11 15:18:27,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:18:27,449 INFO L93 Difference]: Finished difference Result 205 states and 229 transitions. [2024-11-11 15:18:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-11 15:18:27,450 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 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 99 [2024-11-11 15:18:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:18:27,454 INFO L225 Difference]: With dead ends: 205 [2024-11-11 15:18:27,455 INFO L226 Difference]: Without dead ends: 128 [2024-11-11 15:18:27,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-11 15:18:27,457 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:18:27,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 226 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:18:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-11 15:18:27,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-11 15:18:27,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.0551181102362204) internal successors, (134), 127 states have internal predecessors, (134), 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) [2024-11-11 15:18:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2024-11-11 15:18:27,477 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 99 [2024-11-11 15:18:27,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:18:27,480 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2024-11-11 15:18:27,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 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) [2024-11-11 15:18:27,480 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2024-11-11 15:18:27,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-11 15:18:27,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:18:27,484 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:18:27,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-11 15:18:27,684 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 [2024-11-11 15:18:27,685 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:18:27,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:18:27,685 INFO L85 PathProgramCache]: Analyzing trace with hash -450730367, now seen corresponding path program 5 times [2024-11-11 15:18:27,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:18:27,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409596729] [2024-11-11 15:18:27,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:18:27,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:18:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:18:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-11 15:18:28,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:18:28,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409596729] [2024-11-11 15:18:28,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409596729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:18:28,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520734919] [2024-11-11 15:18:28,621 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:18:28,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:18:28,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:18:28,623 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) [2024-11-11 15:18:28,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process