./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/uthash-2.0.2/uthash_JEN_test1-1.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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:26:07,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:26:07,291 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 10:26:07,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:26:07,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:26:07,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:26:07,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:26:07,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:26:07,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 10:26:07,321 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 10:26:07,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:26:07,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:26:07,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:26:07,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:26:07,322 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:26:07,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:26:07,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:26:07,323 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:26:07,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:26:07,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:26:07,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:26:07,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:26:07,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:26:07,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:26:07,323 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:26:07,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:26:07,324 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:26:07,324 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:26:07,324 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:26:07,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:26:07,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 10:26:07,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:26:07,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:26:07,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:26:07,325 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:26:07,325 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:26:07,325 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:26:07,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:26:07,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:26:07,325 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:26:07,325 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:26:07,325 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:26:07,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:26:07,325 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/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 -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2025-03-17 10:26:07,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:26:07,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:26:07,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:26:07,568 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:26:07,568 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:26:07,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2025-03-17 10:26:08,693 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e9a9846/7cd20d6ac6754b879e54ff46239c7ee4/FLAG8fd405e58 [2025-03-17 10:26:09,009 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:26:09,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2025-03-17 10:26:09,023 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e9a9846/7cd20d6ac6754b879e54ff46239c7ee4/FLAG8fd405e58 [2025-03-17 10:26:09,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6e9a9846/7cd20d6ac6754b879e54ff46239c7ee4 [2025-03-17 10:26:09,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:26:09,270 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:26:09,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:26:09,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:26:09,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:26:09,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed1b536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09, skipping insertion in model container [2025-03-17 10:26:09,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,295 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:26:09,580 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/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2025-03-17 10:26:09,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:26:09,666 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:26:09,699 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/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2025-03-17 10:26:09,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:26:09,773 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:26:09,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09 WrapperNode [2025-03-17 10:26:09,774 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:26:09,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:26:09,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:26:09,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:26:09,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,826 INFO L138 Inliner]: procedures = 176, calls = 179, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 812 [2025-03-17 10:26:09,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:26:09,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:26:09,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:26:09,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:26:09,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,883 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [156, 2]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 42 writes are split as follows [42, 0]. [2025-03-17 10:26:09,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,917 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,924 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:26:09,938 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:26:09,938 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:26:09,938 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:26:09,939 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (1/1) ... [2025-03-17 10:26:09,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:26:09,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:26:09,970 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) [2025-03-17 10:26:09,977 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 [2025-03-17 10:26:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 10:26:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 10:26:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 10:26:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 10:26:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 10:26:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 10:26:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 10:26:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:26:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:26:10,126 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:26:10,128 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:26:10,927 INFO L? ?]: Removed 206 outVars from TransFormulas that were not future-live. [2025-03-17 10:26:10,928 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:26:10,959 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:26:10,959 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-17 10:26:10,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:26:10 BoogieIcfgContainer [2025-03-17 10:26:10,960 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:26:10,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:26:10,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:26:10,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:26:10,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:26:09" (1/3) ... [2025-03-17 10:26:10,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae7e9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:26:10, skipping insertion in model container [2025-03-17 10:26:10,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:26:09" (2/3) ... [2025-03-17 10:26:10,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae7e9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:26:10, skipping insertion in model container [2025-03-17 10:26:10,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:26:10" (3/3) ... [2025-03-17 10:26:10,969 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-1.i [2025-03-17 10:26:10,981 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:26:10,982 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test1-1.i that has 4 procedures, 230 locations, 1 initial locations, 19 loop locations, and 1 error locations. [2025-03-17 10:26:11,029 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:26:11,040 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;@ea6b9dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:26:11,040 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 10:26:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 209 states have (on average 1.6220095693779903) internal successors, (339), 220 states have internal predecessors, (339), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 10:26:11,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-17 10:26:11,050 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:26:11,050 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:26:11,051 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:26:11,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:26:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1634872674, now seen corresponding path program 1 times [2025-03-17 10:26:11,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:26:11,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055830101] [2025-03-17 10:26:11,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:26:11,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:26:11,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 10:26:11,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 10:26:11,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:26:11,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:26:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:26:11,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:26:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055830101] [2025-03-17 10:26:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055830101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:26:11,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:26:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:26:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729479833] [2025-03-17 10:26:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:26:11,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:26:11,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:26:11,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:26:11,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:26:11,236 INFO L87 Difference]: Start difference. First operand has 226 states, 209 states have (on average 1.6220095693779903) internal successors, (339), 220 states have internal predecessors, (339), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-03-17 10:26:11,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:26:11,363 INFO L93 Difference]: Finished difference Result 642 states and 1049 transitions. [2025-03-17 10:26:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:26:11,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 8 [2025-03-17 10:26:11,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:26:11,375 INFO L225 Difference]: With dead ends: 642 [2025-03-17 10:26:11,375 INFO L226 Difference]: Without dead ends: 415 [2025-03-17 10:26:11,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:26:11,380 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 271 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:26:11,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 613 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:26:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2025-03-17 10:26:11,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 225. [2025-03-17 10:26:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 209 states have (on average 1.4641148325358853) internal successors, (306), 219 states have internal predecessors, (306), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 10:26:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 332 transitions. [2025-03-17 10:26:11,415 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 332 transitions. Word has length 8 [2025-03-17 10:26:11,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:26:11,415 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 332 transitions. [2025-03-17 10:26:11,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-03-17 10:26:11,416 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 332 transitions. [2025-03-17 10:26:11,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 10:26:11,419 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:26:11,419 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] [2025-03-17 10:26:11,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:26:11,420 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:26:11,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:26:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1028322362, now seen corresponding path program 1 times [2025-03-17 10:26:11,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:26:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639152567] [2025-03-17 10:26:11,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:26:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:26:11,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 10:26:11,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 10:26:11,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:26:11,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:26:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:26:11,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:26:11,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639152567] [2025-03-17 10:26:11,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639152567] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:26:11,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:26:11,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:26:11,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669229234] [2025-03-17 10:26:11,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:26:11,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:26:11,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:26:11,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:26:11,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:26:11,822 INFO L87 Difference]: Start difference. First operand 225 states and 332 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-17 10:26:11,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:26:11,943 INFO L93 Difference]: Finished difference Result 451 states and 665 transitions. [2025-03-17 10:26:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:26:11,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 81 [2025-03-17 10:26:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:26:11,946 INFO L225 Difference]: With dead ends: 451 [2025-03-17 10:26:11,948 INFO L226 Difference]: Without dead ends: 228 [2025-03-17 10:26:11,948 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 [2025-03-17 10:26:11,949 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 105 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:26:11,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 762 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:26:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-03-17 10:26:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2025-03-17 10:26:11,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 209 states have (on average 1.430622009569378) internal successors, (299), 219 states have internal predecessors, (299), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 10:26:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 325 transitions. [2025-03-17 10:26:11,961 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 325 transitions. Word has length 81 [2025-03-17 10:26:11,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:26:11,962 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 325 transitions. [2025-03-17 10:26:11,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2025-03-17 10:26:11,962 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 325 transitions. [2025-03-17 10:26:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 10:26:11,963 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:26:11,964 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] [2025-03-17 10:26:11,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:26:11,964 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:26:11,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:26:11,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1316089249, now seen corresponding path program 1 times [2025-03-17 10:26:11,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:26:11,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587430057] [2025-03-17 10:26:11,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:26:11,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:26:12,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 10:26:12,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 10:26:12,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:26:12,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:26:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:26:12,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:26:12,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587430057] [2025-03-17 10:26:12,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587430057] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:26:12,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:26:12,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 10:26:12,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239065683] [2025-03-17 10:26:12,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:26:12,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:26:12,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:26:12,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:26:12,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:26:12,153 INFO L87 Difference]: Start difference. First operand 225 states and 325 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-03-17 10:26:12,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:26:12,233 INFO L93 Difference]: Finished difference Result 454 states and 657 transitions. [2025-03-17 10:26:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:26:12,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 81 [2025-03-17 10:26:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:26:12,235 INFO L225 Difference]: With dead ends: 454 [2025-03-17 10:26:12,235 INFO L226 Difference]: Without dead ends: 231 [2025-03-17 10:26:12,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:26:12,238 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 1 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:26:12,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 570 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:26:12,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-03-17 10:26:12,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2025-03-17 10:26:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 215 states have (on average 1.4186046511627908) internal successors, (305), 225 states have internal predecessors, (305), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 10:26:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 331 transitions. [2025-03-17 10:26:12,258 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 331 transitions. Word has length 81 [2025-03-17 10:26:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:26:12,259 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 331 transitions. [2025-03-17 10:26:12,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2025-03-17 10:26:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 331 transitions. [2025-03-17 10:26:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-17 10:26:12,261 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:26:12,261 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] [2025-03-17 10:26:12,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:26:12,262 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:26:12,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:26:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1754098752, now seen corresponding path program 1 times [2025-03-17 10:26:12,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:26:12,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807846527] [2025-03-17 10:26:12,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:26:12,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:26:12,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-17 10:26:12,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-17 10:26:12,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:26:12,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:26:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:26:12,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:26:12,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807846527] [2025-03-17 10:26:12,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807846527] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:26:12,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:26:12,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:26:12,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797135861] [2025-03-17 10:26:12,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:26:12,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:26:12,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:26:12,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:26:12,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:26:12,404 INFO L87 Difference]: Start difference. First operand 231 states and 331 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2025-03-17 10:26:12,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:26:12,480 INFO L93 Difference]: Finished difference Result 593 states and 853 transitions. [2025-03-17 10:26:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:26:12,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 81 [2025-03-17 10:26:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:26:12,482 INFO L225 Difference]: With dead ends: 593 [2025-03-17 10:26:12,482 INFO L226 Difference]: Without dead ends: 364 [2025-03-17 10:26:12,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:26:12,484 INFO L435 NwaCegarLoop]: 301 mSDtfsCounter, 134 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:26:12,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 594 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:26:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2025-03-17 10:26:12,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2025-03-17 10:26:12,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 348 states have (on average 1.4281609195402298) internal successors, (497), 358 states have internal predecessors, (497), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 10:26:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 523 transitions. [2025-03-17 10:26:12,504 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 523 transitions. Word has length 81 [2025-03-17 10:26:12,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:26:12,505 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 523 transitions. [2025-03-17 10:26:12,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2025-03-17 10:26:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 523 transitions. [2025-03-17 10:26:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-17 10:26:12,508 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:26:12,509 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] [2025-03-17 10:26:12,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:26:12,509 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:26:12,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:26:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1313756940, now seen corresponding path program 1 times [2025-03-17 10:26:12,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:26:12,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656978005] [2025-03-17 10:26:12,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:26:12,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:26:12,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-17 10:26:12,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-17 10:26:12,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:26:12,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:26:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:26:12,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:26:12,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656978005] [2025-03-17 10:26:12,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656978005] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:26:12,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321988469] [2025-03-17 10:26:12,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:26:12,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:26:12,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:26:12,688 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) [2025-03-17 10:26:12,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 10:26:12,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-17 10:26:12,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-17 10:26:12,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:26:12,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:26:12,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 10:26:12,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:26:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:26:13,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:26:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:26:13,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321988469] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:26:13,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:26:13,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-17 10:26:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963624662] [2025-03-17 10:26:13,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:26:13,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:26:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:26:13,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:26:13,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:26:13,163 INFO L87 Difference]: Start difference. First operand 364 states and 523 transitions. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:26:13,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:26:13,355 INFO L93 Difference]: Finished difference Result 848 states and 1209 transitions. [2025-03-17 10:26:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:26:13,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 96 [2025-03-17 10:26:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:26:13,360 INFO L225 Difference]: With dead ends: 848 [2025-03-17 10:26:13,361 INFO L226 Difference]: Without dead ends: 820 [2025-03-17 10:26:13,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:26:13,363 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 1232 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:26:13,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1452 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:26:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2025-03-17 10:26:13,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2025-03-17 10:26:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 795 states have (on average 1.4025157232704402) internal successors, (1115), 805 states have internal predecessors, (1115), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 10:26:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1159 transitions. [2025-03-17 10:26:13,398 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1159 transitions. Word has length 96 [2025-03-17 10:26:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:26:13,398 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1159 transitions. [2025-03-17 10:26:13,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:26:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1159 transitions. [2025-03-17 10:26:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2025-03-17 10:26:13,403 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:26:13,403 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, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:26:13,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 10:26:13,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:26:13,605 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:26:13,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:26:13,606 INFO L85 PathProgramCache]: Analyzing trace with hash -181740462, now seen corresponding path program 1 times [2025-03-17 10:26:13,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:26:13,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439467972] [2025-03-17 10:26:13,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:26:13,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:26:13,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-17 10:26:13,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-17 10:26:13,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:26:13,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:26:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:26:14,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:26:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439467972] [2025-03-17 10:26:14,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439467972] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:26:14,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146280734] [2025-03-17 10:26:14,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:26:14,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:26:14,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:26:14,399 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) [2025-03-17 10:26:14,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 10:26:14,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-17 10:26:14,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-17 10:26:14,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:26:14,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:26:14,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 1655 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 10:26:14,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:26:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:26:15,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:26:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:26:15,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146280734] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:26:15,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:26:15,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-17 10:26:15,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048096125] [2025-03-17 10:26:15,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:26:15,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 10:26:15,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:26:15,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 10:26:15,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-17 10:26:15,485 INFO L87 Difference]: Start difference. First operand 820 states and 1159 transitions. Second operand has 13 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:26:15,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:26:15,938 INFO L93 Difference]: Finished difference Result 2030 states and 2874 transitions. [2025-03-17 10:26:15,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 10:26:15,939 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 315 [2025-03-17 10:26:15,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:26:15,948 INFO L225 Difference]: With dead ends: 2030 [2025-03-17 10:26:15,948 INFO L226 Difference]: Without dead ends: 2002 [2025-03-17 10:26:15,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-17 10:26:15,949 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 3341 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:26:15,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 3198 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:26:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2025-03-17 10:26:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 2002. [2025-03-17 10:26:16,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1959 states have (on average 1.3991832567636548) internal successors, (2741), 1969 states have internal predecessors, (2741), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-17 10:26:16,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2821 transitions. [2025-03-17 10:26:16,008 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2821 transitions. Word has length 315 [2025-03-17 10:26:16,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:26:16,009 INFO L471 AbstractCegarLoop]: Abstraction has 2002 states and 2821 transitions. [2025-03-17 10:26:16,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:26:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2821 transitions. [2025-03-17 10:26:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2025-03-17 10:26:16,025 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:26:16,025 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, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:26:16,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 10:26:16,225 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,SelfDestructingSolverStorable5 [2025-03-17 10:26:16,226 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:26:16,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:26:16,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1575731218, now seen corresponding path program 2 times [2025-03-17 10:26:16,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:26:16,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669287274] [2025-03-17 10:26:16,227 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 10:26:16,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:26:16,442 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 753 statements into 2 equivalence classes.