./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 08:52:30,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 08:52:30,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 08:52:30,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 08:52:30,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 08:52:30,345 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 08:52:30,346 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 08:52:30,346 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 08:52:30,347 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 08:52:30,347 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 08:52:30,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 08:52:30,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 08:52:30,348 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 08:52:30,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 08:52:30,349 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 08:52:30,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 08:52:30,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 08:52:30,349 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 08:52:30,350 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 08:52:30,351 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 08:52:30,351 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 08:52:30,351 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 08:52:30,351 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 08:52:30,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:52:30,351 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 08:52:30,352 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> b9bf0bad0cbe69b5d3c479fc9571d5ea3a755c149f856a4942bf9e49854dfec3 [2025-02-06 08:52:30,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 08:52:30,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 08:52:30,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 08:52:30,652 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 08:52:30,653 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 08:52:30,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2025-02-06 08:52:31,994 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd4231dc8/f1861873a3924552a8f3eb8b153488fb/FLAGf83541e0c [2025-02-06 08:52:32,429 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 08:52:32,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i [2025-02-06 08:52:32,452 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd4231dc8/f1861873a3924552a8f3eb8b153488fb/FLAGf83541e0c [2025-02-06 08:52:32,577 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cd4231dc8/f1861873a3924552a8f3eb8b153488fb [2025-02-06 08:52:32,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 08:52:32,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 08:52:32,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 08:52:32,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 08:52:32,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 08:52:32,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:52:32" (1/1) ... [2025-02-06 08:52:32,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ff81170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:32, skipping insertion in model container [2025-02-06 08:52:32,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:52:32" (1/1) ... [2025-02-06 08:52:32,638 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 08:52:32,970 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2025-02-06 08:52:33,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:52:33,122 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 08:52:33,165 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-1.i[33021,33034] [2025-02-06 08:52:33,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:52:33,283 INFO L204 MainTranslator]: Completed translation [2025-02-06 08:52:33,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33 WrapperNode [2025-02-06 08:52:33,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 08:52:33,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 08:52:33,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 08:52:33,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 08:52:33,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,378 INFO L138 Inliner]: procedures = 176, calls = 335, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1540 [2025-02-06 08:52:33,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 08:52:33,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 08:52:33,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 08:52:33,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 08:52:33,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,407 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,512 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [307, 2]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 82 writes are split as follows [82, 0]. [2025-02-06 08:52:33,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,562 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 08:52:33,595 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 08:52:33,595 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 08:52:33,595 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 08:52:33,596 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (1/1) ... [2025-02-06 08:52:33,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:52:33,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:52:33,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 08:52:33,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 08:52:33,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 08:52:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 08:52:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 08:52:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 08:52:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 08:52:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 08:52:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 08:52:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 08:52:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 08:52:33,665 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 08:52:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 08:52:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 08:52:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 08:52:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 08:52:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 08:52:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 08:52:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 08:52:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 08:52:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 08:52:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 08:52:33,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 08:52:33,878 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 08:52:33,880 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 08:52:35,461 INFO L? ?]: Removed 387 outVars from TransFormulas that were not future-live. [2025-02-06 08:52:35,461 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 08:52:35,526 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 08:52:35,530 INFO L337 CfgBuilder]: Removed 2 assume(true) statements. [2025-02-06 08:52:35,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:52:35 BoogieIcfgContainer [2025-02-06 08:52:35,532 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 08:52:35,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 08:52:35,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 08:52:35,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 08:52:35,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 08:52:32" (1/3) ... [2025-02-06 08:52:35,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e94c9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:52:35, skipping insertion in model container [2025-02-06 08:52:35,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:52:33" (2/3) ... [2025-02-06 08:52:35,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e94c9cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:52:35, skipping insertion in model container [2025-02-06 08:52:35,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:52:35" (3/3) ... [2025-02-06 08:52:35,542 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-1.i [2025-02-06 08:52:35,556 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 08:52:35,558 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test4-1.i that has 4 procedures, 422 locations, 1 initial locations, 36 loop locations, and 1 error locations. [2025-02-06 08:52:35,628 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:52:35,641 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;@698db2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:52:35,642 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 08:52:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 418 states, 398 states have (on average 1.6130653266331658) internal successors, (642), 409 states have internal predecessors, (642), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 08:52:35,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 08:52:35,656 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:52:35,657 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:52:35,657 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:52:35,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:52:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash -355032848, now seen corresponding path program 1 times [2025-02-06 08:52:35,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:52:35,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995494526] [2025-02-06 08:52:35,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:52:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:52:35,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 08:52:35,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 08:52:35,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:52:35,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:52:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:52:35,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:52:35,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995494526] [2025-02-06 08:52:35,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995494526] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:52:35,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:52:35,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:52:35,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786912962] [2025-02-06 08:52:35,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:52:35,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:52:35,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:52:35,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:52:35,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:52:35,904 INFO L87 Difference]: Start difference. First operand has 418 states, 398 states have (on average 1.6130653266331658) internal successors, (642), 409 states have internal predecessors, (642), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:52:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:52:36,168 INFO L93 Difference]: Finished difference Result 1214 states and 1972 transitions. [2025-02-06 08:52:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:52:36,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 08:52:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:52:36,181 INFO L225 Difference]: With dead ends: 1214 [2025-02-06 08:52:36,181 INFO L226 Difference]: Without dead ends: 795 [2025-02-06 08:52:36,188 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 [2025-02-06 08:52:36,190 INFO L435 NwaCegarLoop]: 612 mSDtfsCounter, 541 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:52:36,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1175 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:52:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2025-02-06 08:52:36,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 416. [2025-02-06 08:52:36,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 397 states have (on average 1.455919395465995) internal successors, (578), 407 states have internal predecessors, (578), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 08:52:36,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 610 transitions. [2025-02-06 08:52:36,262 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 610 transitions. Word has length 9 [2025-02-06 08:52:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:52:36,262 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 610 transitions. [2025-02-06 08:52:36,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:52:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 610 transitions. [2025-02-06 08:52:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 08:52:36,271 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:52:36,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:52:36,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 08:52:36,272 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:52:36,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:52:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1529663682, now seen corresponding path program 1 times [2025-02-06 08:52:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:52:36,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728784039] [2025-02-06 08:52:36,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:52:36,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:52:36,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 08:52:36,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 08:52:36,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:52:36,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:52:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:52:37,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:52:37,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728784039] [2025-02-06 08:52:37,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728784039] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:52:37,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:52:37,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:52:37,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479183094] [2025-02-06 08:52:37,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:52:37,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:52:37,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:52:37,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:52:37,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:52:37,073 INFO L87 Difference]: Start difference. First operand 416 states and 610 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:52:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:52:37,369 INFO L93 Difference]: Finished difference Result 832 states and 1220 transitions. [2025-02-06 08:52:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:52:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2025-02-06 08:52:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:52:37,374 INFO L225 Difference]: With dead ends: 832 [2025-02-06 08:52:37,375 INFO L226 Difference]: Without dead ends: 419 [2025-02-06 08:52:37,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 08:52:37,378 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 105 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:52:37,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1530 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:52:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2025-02-06 08:52:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 416. [2025-02-06 08:52:37,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 397 states have (on average 1.438287153652393) internal successors, (571), 407 states have internal predecessors, (571), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 08:52:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 603 transitions. [2025-02-06 08:52:37,408 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 603 transitions. Word has length 153 [2025-02-06 08:52:37,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:52:37,409 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 603 transitions. [2025-02-06 08:52:37,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:52:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 603 transitions. [2025-02-06 08:52:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 08:52:37,417 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:52:37,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:52:37,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 08:52:37,419 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:52:37,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:52:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash -2036893541, now seen corresponding path program 1 times [2025-02-06 08:52:37,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:52:37,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635512291] [2025-02-06 08:52:37,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:52:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:52:37,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 08:52:37,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 08:52:37,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:52:37,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:52:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:52:37,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:52:37,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635512291] [2025-02-06 08:52:37,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635512291] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:52:37,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:52:37,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:52:37,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647127891] [2025-02-06 08:52:37,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:52:37,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:52:37,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:52:37,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:52:37,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:52:37,789 INFO L87 Difference]: Start difference. First operand 416 states and 603 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:52:37,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:52:37,970 INFO L93 Difference]: Finished difference Result 957 states and 1391 transitions. [2025-02-06 08:52:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:52:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2025-02-06 08:52:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:52:37,975 INFO L225 Difference]: With dead ends: 957 [2025-02-06 08:52:37,977 INFO L226 Difference]: Without dead ends: 544 [2025-02-06 08:52:37,979 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 [2025-02-06 08:52:37,979 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 134 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:52:37,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1107 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:52:37,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2025-02-06 08:52:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2025-02-06 08:52:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 525 states have (on average 1.4438095238095239) internal successors, (758), 535 states have internal predecessors, (758), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 08:52:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 790 transitions. [2025-02-06 08:52:38,007 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 790 transitions. Word has length 153 [2025-02-06 08:52:38,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:52:38,007 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 790 transitions. [2025-02-06 08:52:38,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:52:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 790 transitions. [2025-02-06 08:52:38,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-06 08:52:38,012 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:52:38,013 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:52:38,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 08:52:38,013 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:52:38,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:52:38,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1319007358, now seen corresponding path program 1 times [2025-02-06 08:52:38,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:52:38,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551130596] [2025-02-06 08:52:38,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:52:38,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:52:38,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-06 08:52:38,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-06 08:52:38,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:52:38,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:52:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:52:38,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:52:38,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551130596] [2025-02-06 08:52:38,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551130596] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:52:38,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:52:38,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:52:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467930920] [2025-02-06 08:52:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:52:38,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:52:38,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:52:38,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:52:38,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:52:38,505 INFO L87 Difference]: Start difference. First operand 544 states and 790 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:52:38,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:52:38,696 INFO L93 Difference]: Finished difference Result 915 states and 1324 transitions. [2025-02-06 08:52:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:52:38,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2025-02-06 08:52:38,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:52:38,703 INFO L225 Difference]: With dead ends: 915 [2025-02-06 08:52:38,704 INFO L226 Difference]: Without dead ends: 502 [2025-02-06 08:52:38,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 08:52:38,706 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 30 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:52:38,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1379 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:52:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2025-02-06 08:52:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 502. [2025-02-06 08:52:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 483 states have (on average 1.4099378881987579) internal successors, (681), 493 states have internal predecessors, (681), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-06 08:52:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 713 transitions. [2025-02-06 08:52:38,730 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 713 transitions. Word has length 168 [2025-02-06 08:52:38,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:52:38,731 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 713 transitions. [2025-02-06 08:52:38,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:52:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 713 transitions. [2025-02-06 08:52:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-06 08:52:38,735 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:52:38,736 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:52:38,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 08:52:38,736 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:52:38,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:52:38,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1031240471, now seen corresponding path program 1 times [2025-02-06 08:52:38,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:52:38,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231983094] [2025-02-06 08:52:38,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:52:38,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:52:38,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-06 08:52:38,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-06 08:52:38,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:52:38,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:52:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:52:39,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:52:39,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231983094] [2025-02-06 08:52:39,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231983094] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:52:39,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:52:39,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:52:39,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947433164] [2025-02-06 08:52:39,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:52:39,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:52:39,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:52:39,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:52:39,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:52:39,098 INFO L87 Difference]: Start difference. First operand 502 states and 713 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:52:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:52:39,284 INFO L93 Difference]: Finished difference Result 1017 states and 1432 transitions. [2025-02-06 08:52:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:52:39,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2025-02-06 08:52:39,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:52:39,292 INFO L225 Difference]: With dead ends: 1017 [2025-02-06 08:52:39,292 INFO L226 Difference]: Without dead ends: 646 [2025-02-06 08:52:39,294 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 [2025-02-06 08:52:39,295 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 242 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:52:39,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 958 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:52:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2025-02-06 08:52:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2025-02-06 08:52:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 624 states have (on average 1.3942307692307692) internal successors, (870), 634 states have internal predecessors, (870), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2025-02-06 08:52:39,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 908 transitions. [2025-02-06 08:52:39,339 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 908 transitions. Word has length 168 [2025-02-06 08:52:39,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:52:39,339 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 908 transitions. [2025-02-06 08:52:39,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:52:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 908 transitions. [2025-02-06 08:52:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-02-06 08:52:39,342 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:52:39,343 INFO L218 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:52:39,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 08:52:39,343 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:52:39,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:52:39,344 INFO L85 PathProgramCache]: Analyzing trace with hash -552841000, now seen corresponding path program 1 times [2025-02-06 08:52:39,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:52:39,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070412652] [2025-02-06 08:52:39,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:52:39,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:52:39,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-02-06 08:52:39,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-02-06 08:52:39,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:52:39,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:52:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 08:52:39,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:52:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070412652] [2025-02-06 08:52:39,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070412652] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:52:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880972616] [2025-02-06 08:52:39,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:52:39,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:52:39,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:52:39,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:52:39,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 08:52:40,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-02-06 08:52:40,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-02-06 08:52:40,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:52:40,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:52:40,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 08:52:40,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:52:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 08:52:40,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:52:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 08:52:40,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880972616] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:52:40,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:52:40,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-06 08:52:40,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043019379] [2025-02-06 08:52:40,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:52:40,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:52:40,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:52:40,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:52:40,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:52:40,802 INFO L87 Difference]: Start difference. First operand 646 states and 908 transitions. Second operand has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-06 08:52:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:52:41,175 INFO L93 Difference]: Finished difference Result 1413 states and 1981 transitions. [2025-02-06 08:52:41,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:52:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 183 [2025-02-06 08:52:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:52:41,186 INFO L225 Difference]: With dead ends: 1413 [2025-02-06 08:52:41,186 INFO L226 Difference]: Without dead ends: 1384 [2025-02-06 08:52:41,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:52:41,189 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 2082 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 08:52:41,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 1948 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:52:41,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2025-02-06 08:52:41,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2025-02-06 08:52:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1347 states have (on average 1.382331106161841) internal successors, (1862), 1357 states have internal predecessors, (1862), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2025-02-06 08:52:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1930 transitions. [2025-02-06 08:52:41,244 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1930 transitions. Word has length 183 [2025-02-06 08:52:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:52:41,245 INFO L471 AbstractCegarLoop]: Abstraction has 1384 states and 1930 transitions. [2025-02-06 08:52:41,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-06 08:52:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1930 transitions. [2025-02-06 08:52:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2025-02-06 08:52:41,258 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:52:41,259 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:52:41,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 08:52:41,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:52:41,463 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:52:41,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:52:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash -484432988, now seen corresponding path program 1 times [2025-02-06 08:52:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:52:41,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431109674] [2025-02-06 08:52:41,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:52:41,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:52:41,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 615 statements into 1 equivalence classes. [2025-02-06 08:52:42,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 615 of 615 statements. [2025-02-06 08:52:42,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:52:42,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:52:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 08:52:43,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:52:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431109674] [2025-02-06 08:52:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431109674] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:52:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697015147] [2025-02-06 08:52:43,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:52:43,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:52:43,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:52:43,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:52:43,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 08:52:43,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 615 statements into 1 equivalence classes. [2025-02-06 08:52:44,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 615 of 615 statements. [2025-02-06 08:52:44,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:52:44,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:52:44,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 08:52:44,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:52:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 08:52:45,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:52:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 08:52:45,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697015147] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:52:45,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:52:45,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-06 08:52:45,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476568113] [2025-02-06 08:52:45,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:52:45,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 08:52:45,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:52:45,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 08:52:45,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:52:45,848 INFO L87 Difference]: Start difference. First operand 1384 states and 1930 transitions. Second operand has 13 states, 13 states have (on average 103.07692307692308) internal successors, (1340), 13 states have internal predecessors, (1340), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-06 08:52:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:52:46,775 INFO L93 Difference]: Finished difference Result 3441 states and 4804 transitions. [2025-02-06 08:52:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 08:52:46,776 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 103.07692307692308) internal successors, (1340), 13 states have internal predecessors, (1340), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 615 [2025-02-06 08:52:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:52:46,793 INFO L225 Difference]: With dead ends: 3441 [2025-02-06 08:52:46,794 INFO L226 Difference]: Without dead ends: 3412 [2025-02-06 08:52:46,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1235 GetRequests, 1224 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:52:46,797 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 5691 mSDsluCounter, 4596 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5743 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 08:52:46,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5743 Valid, 5155 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 08:52:46,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2025-02-06 08:52:46,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3412. [2025-02-06 08:52:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3339 states have (on average 1.3806528900868524) internal successors, (4610), 3349 states have internal predecessors, (4610), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2025-02-06 08:52:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 4750 transitions. [2025-02-06 08:52:46,906 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 4750 transitions. Word has length 615 [2025-02-06 08:52:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:52:46,908 INFO L471 AbstractCegarLoop]: Abstraction has 3412 states and 4750 transitions. [2025-02-06 08:52:46,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 103.07692307692308) internal successors, (1340), 13 states have internal predecessors, (1340), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-02-06 08:52:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 4750 transitions. [2025-02-06 08:52:46,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1480 [2025-02-06 08:52:46,995 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:52:46,996 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 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, 1, 1, 1, 1, 1, 1] [2025-02-06 08:52:47,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 08:52:47,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:52:47,198 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:52:47,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:52:47,200 INFO L85 PathProgramCache]: Analyzing trace with hash -559337156, now seen corresponding path program 2 times [2025-02-06 08:52:47,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:52:47,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521999901] [2025-02-06 08:52:47,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:52:47,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:52:47,719 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1479 statements into 2 equivalence classes.