./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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_BER_test4-1.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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:12:36,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:12:36,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 21:12:36,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:12:36,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:12:36,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:12:36,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:12:36,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:12:36,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 21:12:36,125 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 21:12:36,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:12:36,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:12:36,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:12:36,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:12:36,126 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:12:36,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:12:36,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:12:36,127 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:12:36,128 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:12:36,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:12:36,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 21:12:36,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:12:36,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:12:36,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:12:36,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:12:36,128 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:12:36,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:12:36,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:12:36,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:12:36,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:12:36,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:12:36,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:12:36,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:12:36,129 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 -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2025-03-08 21:12:36,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:12:36,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:12:36,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:12:36,365 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:12:36,365 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:12:36,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2025-03-08 21:12:37,508 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af8bb00ee/753cd0c92caa4d608a642d97afe97edb/FLAGfb75e816d [2025-03-08 21:12:37,872 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:12:37,873 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2025-03-08 21:12:37,890 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af8bb00ee/753cd0c92caa4d608a642d97afe97edb/FLAGfb75e816d [2025-03-08 21:12:38,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af8bb00ee/753cd0c92caa4d608a642d97afe97edb [2025-03-08 21:12:38,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:12:38,093 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:12:38,094 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:12:38,094 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:12:38,097 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:12:38,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fa90c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38, skipping insertion in model container [2025-03-08 21:12:38,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,129 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:12:38,408 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_BER_test4-1.i[33021,33034] [2025-03-08 21:12:38,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:12:38,518 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:12:38,546 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_BER_test4-1.i[33021,33034] [2025-03-08 21:12:38,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:12:38,631 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:12:38,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38 WrapperNode [2025-03-08 21:12:38,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:12:38,633 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:12:38,633 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:12:38,633 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:12:38,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,703 INFO L138 Inliner]: procedures = 176, calls = 335, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1540 [2025-03-08 21:12:38,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:12:38,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:12:38,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:12:38,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:12:38,715 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,730 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,795 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2025-03-08 21:12:38,800 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,840 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:12:38,864 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:12:38,865 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:12:38,865 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:12:38,866 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (1/1) ... [2025-03-08 21:12:38,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:12:38,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:12:38,890 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) [2025-03-08 21:12:38,893 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 [2025-03-08 21:12:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 21:12:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 21:12:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 21:12:38,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 21:12:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 21:12:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 21:12:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-08 21:12:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-08 21:12:38,912 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-08 21:12:38,913 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 21:12:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:12:38,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:12:39,100 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:12:39,101 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:12:40,295 INFO L? ?]: Removed 387 outVars from TransFormulas that were not future-live. [2025-03-08 21:12:40,295 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:12:40,344 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:12:40,344 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-08 21:12:40,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:12:40 BoogieIcfgContainer [2025-03-08 21:12:40,344 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:12:40,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:12:40,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:12:40,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:12:40,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:12:38" (1/3) ... [2025-03-08 21:12:40,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae1863e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:12:40, skipping insertion in model container [2025-03-08 21:12:40,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:12:38" (2/3) ... [2025-03-08 21:12:40,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae1863e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:12:40, skipping insertion in model container [2025-03-08 21:12:40,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:12:40" (3/3) ... [2025-03-08 21:12:40,351 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2025-03-08 21:12:40,361 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:12:40,362 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test4-1.i that has 4 procedures, 420 locations, 1 initial locations, 34 loop locations, and 1 error locations. [2025-03-08 21:12:40,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:12:40,422 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;@64f16ac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:12:40,422 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 21:12:40,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 396 states have (on average 1.6161616161616161) internal successors, (640), 407 states have internal predecessors, (640), 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) [2025-03-08 21:12:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 21:12:40,433 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:12:40,433 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:12:40,433 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:12:40,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:12:40,438 INFO L85 PathProgramCache]: Analyzing trace with hash -225806160, now seen corresponding path program 1 times [2025-03-08 21:12:40,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:12:40,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848500403] [2025-03-08 21:12:40,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:12:40,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:12:40,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 21:12:40,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 21:12:40,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:12:40,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:12:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:12:40,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:12:40,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848500403] [2025-03-08 21:12:40,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848500403] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:12:40,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:12:40,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:12:40,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12164151] [2025-03-08 21:12:40,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:12:40,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:12:40,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:12:40,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:12:40,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:12:40,616 INFO L87 Difference]: Start difference. First operand has 416 states, 396 states have (on average 1.6161616161616161) internal successors, (640), 407 states have internal predecessors, (640), 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) [2025-03-08 21:12:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:12:40,829 INFO L93 Difference]: Finished difference Result 1208 states and 1966 transitions. [2025-03-08 21:12:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:12:40,831 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 [2025-03-08 21:12:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:12:40,844 INFO L225 Difference]: With dead ends: 1208 [2025-03-08 21:12:40,844 INFO L226 Difference]: Without dead ends: 791 [2025-03-08 21:12:40,852 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 [2025-03-08 21:12:40,854 INFO L435 NwaCegarLoop]: 610 mSDtfsCounter, 539 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1171 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 [2025-03-08 21:12:40,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1171 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:12:40,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2025-03-08 21:12:40,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 414. [2025-03-08 21:12:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 395 states have (on average 1.4582278481012658) internal successors, (576), 405 states have internal predecessors, (576), 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) [2025-03-08 21:12:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 608 transitions. [2025-03-08 21:12:40,909 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 608 transitions. Word has length 9 [2025-03-08 21:12:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:12:40,910 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 608 transitions. [2025-03-08 21:12:40,910 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) [2025-03-08 21:12:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 608 transitions. [2025-03-08 21:12:40,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-08 21:12:40,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:12:40,916 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] [2025-03-08 21:12:40,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:12:40,916 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:12:40,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:12:40,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1367491672, now seen corresponding path program 1 times [2025-03-08 21:12:40,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:12:40,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229183482] [2025-03-08 21:12:40,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:12:40,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:12:40,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-08 21:12:41,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-08 21:12:41,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:12:41,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:12:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:12:41,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:12:41,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229183482] [2025-03-08 21:12:41,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229183482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:12:41,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:12:41,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:12:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143735993] [2025-03-08 21:12:41,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:12:41,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:12:41,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:12:41,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:12:41,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:12:41,440 INFO L87 Difference]: Start difference. First operand 414 states and 608 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2025-03-08 21:12:41,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:12:41,613 INFO L93 Difference]: Finished difference Result 828 states and 1216 transitions. [2025-03-08 21:12:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:12:41,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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 151 [2025-03-08 21:12:41,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:12:41,616 INFO L225 Difference]: With dead ends: 828 [2025-03-08 21:12:41,616 INFO L226 Difference]: Without dead ends: 417 [2025-03-08 21:12:41,617 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 [2025-03-08 21:12:41,618 INFO L435 NwaCegarLoop]: 536 mSDtfsCounter, 105 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:12:41,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1524 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:12:41,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2025-03-08 21:12:41,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 414. [2025-03-08 21:12:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 395 states have (on average 1.440506329113924) internal successors, (569), 405 states have internal predecessors, (569), 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) [2025-03-08 21:12:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 601 transitions. [2025-03-08 21:12:41,633 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 601 transitions. Word has length 151 [2025-03-08 21:12:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:12:41,633 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 601 transitions. [2025-03-08 21:12:41,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2025-03-08 21:12:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 601 transitions. [2025-03-08 21:12:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-08 21:12:41,637 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:12:41,637 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] [2025-03-08 21:12:41,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:12:41,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:12:41,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:12:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2146376350, now seen corresponding path program 1 times [2025-03-08 21:12:41,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:12:41,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928424452] [2025-03-08 21:12:41,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:12:41,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:12:41,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-08 21:12:41,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-08 21:12:41,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:12:41,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:12:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:12:41,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:12:41,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928424452] [2025-03-08 21:12:41,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928424452] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:12:41,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:12:41,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:12:41,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297139135] [2025-03-08 21:12:41,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:12:41,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:12:41,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:12:41,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:12:41,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:12:41,858 INFO L87 Difference]: Start difference. First operand 414 states and 601 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2025-03-08 21:12:41,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:12:41,983 INFO L93 Difference]: Finished difference Result 952 states and 1386 transitions. [2025-03-08 21:12:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:12:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 151 [2025-03-08 21:12:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:12:41,986 INFO L225 Difference]: With dead ends: 952 [2025-03-08 21:12:41,986 INFO L226 Difference]: Without dead ends: 541 [2025-03-08 21:12:41,987 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 [2025-03-08 21:12:41,989 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 134 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1103 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 [2025-03-08 21:12:41,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1103 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:12:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2025-03-08 21:12:42,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2025-03-08 21:12:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 522 states have (on average 1.446360153256705) internal successors, (755), 532 states have internal predecessors, (755), 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) [2025-03-08 21:12:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 787 transitions. [2025-03-08 21:12:42,016 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 787 transitions. Word has length 151 [2025-03-08 21:12:42,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:12:42,017 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 787 transitions. [2025-03-08 21:12:42,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2025-03-08 21:12:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 787 transitions. [2025-03-08 21:12:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-08 21:12:42,019 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:12:42,020 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] [2025-03-08 21:12:42,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 21:12:42,020 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:12:42,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:12:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash 770752524, now seen corresponding path program 1 times [2025-03-08 21:12:42,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:12:42,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474416051] [2025-03-08 21:12:42,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:12:42,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:12:42,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 21:12:42,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 21:12:42,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:12:42,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:12:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:12:42,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:12:42,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474416051] [2025-03-08 21:12:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474416051] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:12:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:12:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:12:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392026322] [2025-03-08 21:12:42,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:12:42,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:12:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:12:42,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:12:42,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:12:42,360 INFO L87 Difference]: Start difference. First operand 541 states and 787 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2025-03-08 21:12:42,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:12:42,484 INFO L93 Difference]: Finished difference Result 910 states and 1319 transitions. [2025-03-08 21:12:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 21:12:42,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 166 [2025-03-08 21:12:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:12:42,488 INFO L225 Difference]: With dead ends: 910 [2025-03-08 21:12:42,489 INFO L226 Difference]: Without dead ends: 499 [2025-03-08 21:12:42,490 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 [2025-03-08 21:12:42,490 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 30 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:12:42,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1373 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:12:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2025-03-08 21:12:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2025-03-08 21:12:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 480 states have (on average 1.4125) internal successors, (678), 490 states have internal predecessors, (678), 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) [2025-03-08 21:12:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 710 transitions. [2025-03-08 21:12:42,508 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 710 transitions. Word has length 166 [2025-03-08 21:12:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:12:42,509 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 710 transitions. [2025-03-08 21:12:42,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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) [2025-03-08 21:12:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 710 transitions. [2025-03-08 21:12:42,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-08 21:12:42,511 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:12:42,512 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] [2025-03-08 21:12:42,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 21:12:42,512 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:12:42,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:12:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash 482985637, now seen corresponding path program 1 times [2025-03-08 21:12:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:12:42,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025895342] [2025-03-08 21:12:42,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:12:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:12:42,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 21:12:42,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 21:12:42,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:12:42,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:12:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:12:42,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:12:42,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025895342] [2025-03-08 21:12:42,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025895342] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:12:42,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:12:42,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:12:42,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210032780] [2025-03-08 21:12:42,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:12:42,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:12:42,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:12:42,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:12:42,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:12:42,750 INFO L87 Difference]: Start difference. First operand 499 states and 710 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2025-03-08 21:12:42,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:12:42,871 INFO L93 Difference]: Finished difference Result 1011 states and 1426 transitions. [2025-03-08 21:12:42,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:12:42,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 166 [2025-03-08 21:12:42,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:12:42,875 INFO L225 Difference]: With dead ends: 1011 [2025-03-08 21:12:42,875 INFO L226 Difference]: Without dead ends: 642 [2025-03-08 21:12:42,876 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 [2025-03-08 21:12:42,876 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 242 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:12:42,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 954 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:12:42,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2025-03-08 21:12:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2025-03-08 21:12:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.396774193548387) internal successors, (866), 630 states have internal predecessors, (866), 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) [2025-03-08 21:12:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 904 transitions. [2025-03-08 21:12:42,897 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 904 transitions. Word has length 166 [2025-03-08 21:12:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:12:42,897 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 904 transitions. [2025-03-08 21:12:42,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2025-03-08 21:12:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 904 transitions. [2025-03-08 21:12:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-08 21:12:42,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:12:42,900 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] [2025-03-08 21:12:42,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 21:12:42,900 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:12:42,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:12:42,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1095026314, now seen corresponding path program 1 times [2025-03-08 21:12:42,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:12:42,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301483448] [2025-03-08 21:12:42,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:12:42,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:12:42,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 21:12:42,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 21:12:42,994 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:12:42,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:12:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:12:43,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:12:43,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301483448] [2025-03-08 21:12:43,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301483448] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:12:43,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832018995] [2025-03-08 21:12:43,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:12:43,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:12:43,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:12:43,184 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) [2025-03-08 21:12:43,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 21:12:43,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 21:12:43,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 21:12:43,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:12:43,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:12:43,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 21:12:43,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:12:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:12:43,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 21:12:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:12:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832018995] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 21:12:43,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 21:12:43,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 21:12:43,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502613304] [2025-03-08 21:12:43,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 21:12:43,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:12:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:12:43,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:12:43,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:12:43,936 INFO L87 Difference]: Start difference. First operand 642 states and 904 transitions. Second operand has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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) [2025-03-08 21:12:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:12:44,176 INFO L93 Difference]: Finished difference Result 1405 states and 1973 transitions. [2025-03-08 21:12:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:12:44,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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 181 [2025-03-08 21:12:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:12:44,182 INFO L225 Difference]: With dead ends: 1405 [2025-03-08 21:12:44,183 INFO L226 Difference]: Without dead ends: 1376 [2025-03-08 21:12:44,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:12:44,185 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 2288 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:12:44,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 1918 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:12:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2025-03-08 21:12:44,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1376. [2025-03-08 21:12:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1339 states have (on average 1.3846153846153846) internal successors, (1854), 1349 states have internal predecessors, (1854), 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) [2025-03-08 21:12:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1922 transitions. [2025-03-08 21:12:44,219 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1922 transitions. Word has length 181 [2025-03-08 21:12:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:12:44,219 INFO L471 AbstractCegarLoop]: Abstraction has 1376 states and 1922 transitions. [2025-03-08 21:12:44,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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) [2025-03-08 21:12:44,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1922 transitions. [2025-03-08 21:12:44,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2025-03-08 21:12:44,229 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:12:44,229 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, 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] [2025-03-08 21:12:44,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 21:12:44,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-08 21:12:44,433 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:12:44,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:12:44,434 INFO L85 PathProgramCache]: Analyzing trace with hash -14604577, now seen corresponding path program 1 times [2025-03-08 21:12:44,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:12:44,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014124926] [2025-03-08 21:12:44,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:12:44,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:12:44,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 607 statements into 1 equivalence classes. [2025-03-08 21:12:44,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 607 of 607 statements. [2025-03-08 21:12:44,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:12:44,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:12:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 844 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:12:45,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:12:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014124926] [2025-03-08 21:12:45,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014124926] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:12:45,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199406421] [2025-03-08 21:12:45,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:12:45,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:12:45,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:12:45,711 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) [2025-03-08 21:12:45,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 21:12:46,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 607 statements into 1 equivalence classes. [2025-03-08 21:12:46,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 607 of 607 statements. [2025-03-08 21:12:46,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:12:46,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:12:46,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 3104 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 21:12:46,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:12:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 844 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:12:47,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 21:12:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 844 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:12:47,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199406421] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 21:12:47,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 21:12:47,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-08 21:12:47,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225708532] [2025-03-08 21:12:47,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 21:12:47,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 21:12:47,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:12:47,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 21:12:47,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-08 21:12:47,594 INFO L87 Difference]: Start difference. First operand 1376 states and 1922 transitions. Second operand has 13 states, 13 states have (on average 101.6923076923077) internal successors, (1322), 13 states have internal predecessors, (1322), 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) [2025-03-08 21:12:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:12:48,259 INFO L93 Difference]: Finished difference Result 3421 states and 4784 transitions. [2025-03-08 21:12:48,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 21:12:48,260 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 101.6923076923077) internal successors, (1322), 13 states have internal predecessors, (1322), 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 607 [2025-03-08 21:12:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:12:48,271 INFO L225 Difference]: With dead ends: 3421 [2025-03-08 21:12:48,271 INFO L226 Difference]: Without dead ends: 3392 [2025-03-08 21:12:48,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1219 GetRequests, 1208 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-08 21:12:48,273 INFO L435 NwaCegarLoop]: 518 mSDtfsCounter, 6885 mSDsluCounter, 4539 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6937 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:12:48,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6937 Valid, 5057 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:12:48,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2025-03-08 21:12:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3392. [2025-03-08 21:12:48,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3392 states, 3319 states have (on average 1.3829466706839408) internal successors, (4590), 3329 states have internal predecessors, (4590), 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) [2025-03-08 21:12:48,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3392 states to 3392 states and 4730 transitions. [2025-03-08 21:12:48,342 INFO L78 Accepts]: Start accepts. Automaton has 3392 states and 4730 transitions. Word has length 607 [2025-03-08 21:12:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:12:48,344 INFO L471 AbstractCegarLoop]: Abstraction has 3392 states and 4730 transitions. [2025-03-08 21:12:48,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.6923076923077) internal successors, (1322), 13 states have internal predecessors, (1322), 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) [2025-03-08 21:12:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3392 states and 4730 transitions. [2025-03-08 21:12:48,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1460 [2025-03-08 21:12:48,383 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:12:48,383 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, 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] [2025-03-08 21:12:48,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 21:12:48,584 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,SelfDestructingSolverStorable6 [2025-03-08 21:12:48,584 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:12:48,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:12:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash 479934665, now seen corresponding path program 2 times [2025-03-08 21:12:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:12:48,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655444235] [2025-03-08 21:12:48,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 21:12:48,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:12:48,980 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1459 statements into 2 equivalence classes.