./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/memory-model/4SB.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/memory-model/4SB.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 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 14:05:42,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 14:05:42,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 14:05:42,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 14:05:42,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 14:05:42,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 14:05:42,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 14:05:42,422 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 14:05:42,423 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 14:05:42,423 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 14:05:42,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 14:05:42,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 14:05:42,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 14:05:42,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 14:05:42,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 14:05:42,424 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 14:05:42,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 14:05:42,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 14:05:42,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 14:05:42,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 14:05:42,427 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 -> 15b0cbd6c91287c392a1dcce1e0a32a1c72d5f0acdee848dea776c36b74cf850 [2025-03-16 14:05:42,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 14:05:42,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 14:05:42,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 14:05:42,683 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 14:05:42,684 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 14:05:42,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memory-model/4SB.i [2025-03-16 14:05:43,855 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73ec86b1b/b0a44b9ca684492cb79b2fea3d494021/FLAG13d948caa [2025-03-16 14:05:44,088 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 14:05:44,089 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memory-model/4SB.i [2025-03-16 14:05:44,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73ec86b1b/b0a44b9ca684492cb79b2fea3d494021/FLAG13d948caa [2025-03-16 14:05:44,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73ec86b1b/b0a44b9ca684492cb79b2fea3d494021 [2025-03-16 14:05:44,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 14:05:44,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 14:05:44,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 14:05:44,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 14:05:44,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 14:05:44,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2959b12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44, skipping insertion in model container [2025-03-16 14:05:44,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,136 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 14:05:44,324 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/memory-model/4SB.i[21105,21118] [2025-03-16 14:05:44,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 14:05:44,340 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 14:05:44,430 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/memory-model/4SB.i[21105,21118] [2025-03-16 14:05:44,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 14:05:44,441 INFO L204 MainTranslator]: Completed translation [2025-03-16 14:05:44,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44 WrapperNode [2025-03-16 14:05:44,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 14:05:44,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 14:05:44,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 14:05:44,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 14:05:44,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,511 INFO L138 Inliner]: procedures = 27, calls = 680, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1617 [2025-03-16 14:05:44,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 14:05:44,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 14:05:44,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 14:05:44,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 14:05:44,520 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,571 INFO L175 MemorySlicer]: Split 488 memory accesses to 16 slices as follows [60, 15, 12, 3, 10, 13, 45, 13, 13, 13, 96, 12, 10, 152, 10, 11]. 31 percent of accesses are in the largest equivalence class. The 36 initializations are split as follows [0, 0, 5, 0, 0, 5, 0, 5, 5, 5, 0, 10, 0, 0, 1, 0]. The 171 writes are split as follows [20, 5, 2, 2, 5, 2, 15, 2, 2, 2, 20, 1, 5, 80, 3, 5]. [2025-03-16 14:05:44,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,606 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 14:05:44,640 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 14:05:44,640 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 14:05:44,640 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 14:05:44,641 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (1/1) ... [2025-03-16 14:05:44,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 14:05:44,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:44,667 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) [2025-03-16 14:05:44,670 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 [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure store_buffering_4_conditions [2025-03-16 14:05:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure store_buffering_4_conditions [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_write [2025-03-16 14:05:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_write [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_headerT [2025-03-16 14:05:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_nondet_headerT [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure stepWriteBuffer [2025-03-16 14:05:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stepWriteBuffer [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_read [2025-03-16 14:05:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_read [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-16 14:05:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-16 14:05:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-16 14:05:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-16 14:05:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-16 14:05:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-16 14:05:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 14:05:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 14:05:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure initWriteBuffer [2025-03-16 14:05:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure initWriteBuffer [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure tso_core_fence [2025-03-16 14:05:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure tso_core_fence [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 14:05:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 14:05:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 14:05:44,893 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 14:05:44,894 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 14:05:45,829 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L62: havoc __VERIFIER_nondet_operations_#t~nondet1#1; [2025-03-16 14:05:45,829 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L71: havoc #t~mem7#1;havoc #t~mem8#1;havoc #t~mem9#1;havoc #t~mem10#1;havoc #t~mem11#1;call ULTIMATE.dealloc(~#result~0#1.base, ~#result~0#1.offset);havoc ~#result~0#1.base, ~#result~0#1.offset; [2025-03-16 14:05:46,352 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L59: havoc __VERIFIER_nondet_step_#t~nondet0#1; [2025-03-16 14:05:46,352 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L95: call ULTIMATE.dealloc(main_~#sharedMemory~0#1.base, main_~#sharedMemory~0#1.offset);havoc main_~#sharedMemory~0#1.base, main_~#sharedMemory~0#1.offset;call ULTIMATE.dealloc(main_~#wrBuffer0~0#1.base, main_~#wrBuffer0~0#1.offset);havoc main_~#wrBuffer0~0#1.base, main_~#wrBuffer0~0#1.offset;call ULTIMATE.dealloc(main_~#wrBuffer1~0#1.base, main_~#wrBuffer1~0#1.offset);havoc main_~#wrBuffer1~0#1.base, main_~#wrBuffer1~0#1.offset;call ULTIMATE.dealloc(main_~#wrBuffer2~0#1.base, main_~#wrBuffer2~0#1.offset);havoc main_~#wrBuffer2~0#1.base, main_~#wrBuffer2~0#1.offset;call ULTIMATE.dealloc(main_~#wrBuffer3~0#1.base, main_~#wrBuffer3~0#1.offset);havoc main_~#wrBuffer3~0#1.base, main_~#wrBuffer3~0#1.offset;call ULTIMATE.dealloc(main_~#g_history~0#1.base, main_~#g_history~0#1.offset);havoc main_~#g_history~0#1.base, main_~#g_history~0#1.offset;call ULTIMATE.dealloc(main_~#global_time~0#1.base, main_~#global_time~0#1.offset);havoc main_~#global_time~0#1.base, main_~#global_time~0#1.offset;call ULTIMATE.dealloc(main_~#litmus_input~0#1.base, main_~#litmus_input~0#1.offset);havoc main_~#litmus_input~0#1.base, main_~#litmus_input~0#1.offset;call ULTIMATE.dealloc(main_~#input_action~0#1.base, main_~#input_action~0#1.offset);havoc main_~#input_action~0#1.base, main_~#input_action~0#1.offset; [2025-03-16 14:05:46,419 INFO L? ?]: Removed 207 outVars from TransFormulas that were not future-live. [2025-03-16 14:05:46,419 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 14:05:46,435 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 14:05:46,437 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 14:05:46,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:05:46 BoogieIcfgContainer [2025-03-16 14:05:46,437 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 14:05:46,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 14:05:46,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 14:05:46,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 14:05:46,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 02:05:44" (1/3) ... [2025-03-16 14:05:46,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de7c2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 02:05:46, skipping insertion in model container [2025-03-16 14:05:46,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:05:44" (2/3) ... [2025-03-16 14:05:46,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de7c2ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 02:05:46, skipping insertion in model container [2025-03-16 14:05:46,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:05:46" (3/3) ... [2025-03-16 14:05:46,445 INFO L128 eAbstractionObserver]: Analyzing ICFG 4SB.i [2025-03-16 14:05:46,457 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 14:05:46,458 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 4SB.i that has 8 procedures, 266 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2025-03-16 14:05:46,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 14:05:46,523 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;@6df76c20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 14:05:46,524 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 14:05:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 231 states have (on average 1.5844155844155845) internal successors, (366), 236 states have internal predecessors, (366), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:46,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-16 14:05:46,541 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:46,542 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2025-03-16 14:05:46,542 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:46,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1446090502, now seen corresponding path program 1 times [2025-03-16 14:05:46,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:46,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343135524] [2025-03-16 14:05:46,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:46,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:46,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 14:05:47,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 14:05:47,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:47,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-16 14:05:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:47,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343135524] [2025-03-16 14:05:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343135524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:05:47,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:05:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860078656] [2025-03-16 14:05:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:47,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:05:47,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:47,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:05:47,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:05:47,401 INFO L87 Difference]: Start difference. First operand has 266 states, 231 states have (on average 1.5844155844155845) internal successors, (366), 236 states have internal predecessors, (366), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:47,469 INFO L93 Difference]: Finished difference Result 531 states and 835 transitions. [2025-03-16 14:05:47,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:05:47,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2025-03-16 14:05:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:47,481 INFO L225 Difference]: With dead ends: 531 [2025-03-16 14:05:47,482 INFO L226 Difference]: Without dead ends: 254 [2025-03-16 14:05:47,486 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 [2025-03-16 14:05:47,490 INFO L435 NwaCegarLoop]: 369 mSDtfsCounter, 0 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:47,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 736 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:47,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2025-03-16 14:05:47,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2025-03-16 14:05:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 220 states have (on average 1.3318181818181818) internal successors, (293), 224 states have internal predecessors, (293), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 345 transitions. [2025-03-16 14:05:47,534 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 345 transitions. Word has length 60 [2025-03-16 14:05:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:47,534 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 345 transitions. [2025-03-16 14:05:47,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:47,536 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 345 transitions. [2025-03-16 14:05:47,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 14:05:47,542 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:47,542 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2025-03-16 14:05:47,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 14:05:47,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:47,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:47,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1114050383, now seen corresponding path program 1 times [2025-03-16 14:05:47,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:47,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249851215] [2025-03-16 14:05:47,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:47,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:47,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 14:05:47,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 14:05:47,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:47,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-16 14:05:47,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:47,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249851215] [2025-03-16 14:05:47,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249851215] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:47,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575658665] [2025-03-16 14:05:47,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:47,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:47,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:47,987 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) [2025-03-16 14:05:47,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 14:05:48,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 14:05:48,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 14:05:48,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:48,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:48,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:05:48,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 14:05:48,385 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:48,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575658665] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:48,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:48,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:05:48,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601444859] [2025-03-16 14:05:48,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:48,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:05:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:48,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:05:48,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:48,387 INFO L87 Difference]: Start difference. First operand 254 states and 345 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:48,414 INFO L93 Difference]: Finished difference Result 505 states and 690 transitions. [2025-03-16 14:05:48,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:05:48,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2025-03-16 14:05:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:48,418 INFO L225 Difference]: With dead ends: 505 [2025-03-16 14:05:48,418 INFO L226 Difference]: Without dead ends: 255 [2025-03-16 14:05:48,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:48,420 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 0 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:48,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 684 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:48,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-03-16 14:05:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2025-03-16 14:05:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 221 states have (on average 1.330316742081448) internal successors, (294), 225 states have internal predecessors, (294), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 346 transitions. [2025-03-16 14:05:48,435 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 346 transitions. Word has length 62 [2025-03-16 14:05:48,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:48,435 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 346 transitions. [2025-03-16 14:05:48,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 346 transitions. [2025-03-16 14:05:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 14:05:48,438 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:48,438 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:48,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 14:05:48,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:48,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:48,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:48,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1184196333, now seen corresponding path program 1 times [2025-03-16 14:05:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:48,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981917097] [2025-03-16 14:05:48,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:48,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 14:05:48,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 14:05:48,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:48,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-03-16 14:05:48,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981917097] [2025-03-16 14:05:48,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981917097] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:48,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628480497] [2025-03-16 14:05:48,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:48,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:48,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:48,977 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) [2025-03-16 14:05:48,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 14:05:49,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 14:05:49,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 14:05:49,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:49,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:49,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:05:49,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-16 14:05:49,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:49,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628480497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:49,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:49,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:05:49,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679797673] [2025-03-16 14:05:49,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:49,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:05:49,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:49,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:05:49,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:49,400 INFO L87 Difference]: Start difference. First operand 255 states and 346 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:49,440 INFO L93 Difference]: Finished difference Result 495 states and 671 transitions. [2025-03-16 14:05:49,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:05:49,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2025-03-16 14:05:49,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:49,444 INFO L225 Difference]: With dead ends: 495 [2025-03-16 14:05:49,444 INFO L226 Difference]: Without dead ends: 262 [2025-03-16 14:05:49,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:49,445 INFO L435 NwaCegarLoop]: 339 mSDtfsCounter, 6 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:49,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 675 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-03-16 14:05:49,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2025-03-16 14:05:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 222 states have (on average 1.3288288288288288) internal successors, (295), 226 states have internal predecessors, (295), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 347 transitions. [2025-03-16 14:05:49,468 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 347 transitions. Word has length 66 [2025-03-16 14:05:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:49,468 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 347 transitions. [2025-03-16 14:05:49,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 347 transitions. [2025-03-16 14:05:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 14:05:49,469 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:49,470 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:49,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 14:05:49,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-16 14:05:49,670 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:49,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:49,671 INFO L85 PathProgramCache]: Analyzing trace with hash 26612663, now seen corresponding path program 1 times [2025-03-16 14:05:49,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:49,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432995029] [2025-03-16 14:05:49,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:49,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:49,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 14:05:49,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 14:05:49,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:49,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-16 14:05:49,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432995029] [2025-03-16 14:05:49,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432995029] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473016087] [2025-03-16 14:05:49,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:49,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:49,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:49,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:49,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 14:05:50,203 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 14:05:50,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 14:05:50,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:50,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:50,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:05:50,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-16 14:05:50,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473016087] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:50,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:50,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:05:50,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167669987] [2025-03-16 14:05:50,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:50,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:05:50,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:50,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:05:50,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:50,301 INFO L87 Difference]: Start difference. First operand 256 states and 347 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:50,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:50,333 INFO L93 Difference]: Finished difference Result 489 states and 662 transitions. [2025-03-16 14:05:50,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:05:50,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2025-03-16 14:05:50,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:50,335 INFO L225 Difference]: With dead ends: 489 [2025-03-16 14:05:50,336 INFO L226 Difference]: Without dead ends: 263 [2025-03-16 14:05:50,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:50,338 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 6 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:50,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 678 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2025-03-16 14:05:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2025-03-16 14:05:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 223 states have (on average 1.3273542600896862) internal successors, (296), 227 states have internal predecessors, (296), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 348 transitions. [2025-03-16 14:05:50,355 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 348 transitions. Word has length 69 [2025-03-16 14:05:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:50,355 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 348 transitions. [2025-03-16 14:05:50,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 348 transitions. [2025-03-16 14:05:50,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 14:05:50,356 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:50,356 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:50,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 14:05:50,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:50,557 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:50,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:50,558 INFO L85 PathProgramCache]: Analyzing trace with hash -581625561, now seen corresponding path program 1 times [2025-03-16 14:05:50,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:50,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16267371] [2025-03-16 14:05:50,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:50,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 14:05:50,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 14:05:50,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:50,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-03-16 14:05:50,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:50,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16267371] [2025-03-16 14:05:50,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16267371] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:50,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467032647] [2025-03-16 14:05:50,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:50,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:50,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:50,797 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:50,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 14:05:51,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 14:05:51,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 14:05:51,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:51,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:51,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:05:51,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-03-16 14:05:51,200 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:51,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467032647] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:51,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:51,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:05:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931017466] [2025-03-16 14:05:51,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:51,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:05:51,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:51,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:05:51,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:51,202 INFO L87 Difference]: Start difference. First operand 257 states and 348 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:51,231 INFO L93 Difference]: Finished difference Result 483 states and 653 transitions. [2025-03-16 14:05:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:05:51,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2025-03-16 14:05:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:51,234 INFO L225 Difference]: With dead ends: 483 [2025-03-16 14:05:51,235 INFO L226 Difference]: Without dead ends: 264 [2025-03-16 14:05:51,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:51,237 INFO L435 NwaCegarLoop]: 339 mSDtfsCounter, 6 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:51,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 674 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:51,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-03-16 14:05:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 258. [2025-03-16 14:05:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 224 states have (on average 1.3258928571428572) internal successors, (297), 228 states have internal predecessors, (297), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 349 transitions. [2025-03-16 14:05:51,248 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 349 transitions. Word has length 72 [2025-03-16 14:05:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:51,249 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 349 transitions. [2025-03-16 14:05:51,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 349 transitions. [2025-03-16 14:05:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 14:05:51,250 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:51,250 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:51,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 14:05:51,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:51,451 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:51,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:51,451 INFO L85 PathProgramCache]: Analyzing trace with hash -256325635, now seen corresponding path program 1 times [2025-03-16 14:05:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:51,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810887453] [2025-03-16 14:05:51,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:51,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:51,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 14:05:51,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 14:05:51,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:51,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-03-16 14:05:51,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:51,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810887453] [2025-03-16 14:05:51,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810887453] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:51,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98918857] [2025-03-16 14:05:51,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:51,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:51,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:51,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:51,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 14:05:51,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 14:05:52,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 14:05:52,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:52,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:52,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:05:52,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-16 14:05:52,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:52,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98918857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:52,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:52,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:05:52,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030401638] [2025-03-16 14:05:52,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:52,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:05:52,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:52,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:05:52,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:52,051 INFO L87 Difference]: Start difference. First operand 258 states and 349 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:52,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:52,079 INFO L93 Difference]: Finished difference Result 473 states and 641 transitions. [2025-03-16 14:05:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:05:52,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2025-03-16 14:05:52,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:52,082 INFO L225 Difference]: With dead ends: 473 [2025-03-16 14:05:52,083 INFO L226 Difference]: Without dead ends: 265 [2025-03-16 14:05:52,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:52,084 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 6 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:52,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 679 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:52,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2025-03-16 14:05:52,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2025-03-16 14:05:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 225 states have (on average 1.3244444444444445) internal successors, (298), 229 states have internal predecessors, (298), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 350 transitions. [2025-03-16 14:05:52,096 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 350 transitions. Word has length 75 [2025-03-16 14:05:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:52,096 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 350 transitions. [2025-03-16 14:05:52,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:05:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 350 transitions. [2025-03-16 14:05:52,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-16 14:05:52,097 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:52,097 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:52,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 14:05:52,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:52,298 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:52,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:52,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1719424609, now seen corresponding path program 1 times [2025-03-16 14:05:52,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:52,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785182141] [2025-03-16 14:05:52,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:52,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:52,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-16 14:05:52,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-16 14:05:52,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:52,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-03-16 14:05:52,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:52,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785182141] [2025-03-16 14:05:52,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785182141] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:52,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201571692] [2025-03-16 14:05:52,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:52,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:52,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:52,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:52,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 14:05:52,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-16 14:05:52,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-16 14:05:52,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:52,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:52,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:05:52,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:52,870 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201571692] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:52,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:52,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:05:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725081910] [2025-03-16 14:05:52,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:52,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:05:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:52,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:05:52,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:52,871 INFO L87 Difference]: Start difference. First operand 259 states and 350 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:52,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:52,966 INFO L93 Difference]: Finished difference Result 326 states and 456 transitions. [2025-03-16 14:05:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:05:52,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 78 [2025-03-16 14:05:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:52,968 INFO L225 Difference]: With dead ends: 326 [2025-03-16 14:05:52,968 INFO L226 Difference]: Without dead ends: 317 [2025-03-16 14:05:52,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:52,969 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 93 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:52,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 596 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 14:05:52,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-03-16 14:05:52,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 260. [2025-03-16 14:05:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 226 states have (on average 1.323008849557522) internal successors, (299), 230 states have internal predecessors, (299), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 351 transitions. [2025-03-16 14:05:52,976 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 351 transitions. Word has length 78 [2025-03-16 14:05:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:52,976 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 351 transitions. [2025-03-16 14:05:52,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 351 transitions. [2025-03-16 14:05:52,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 14:05:52,978 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:52,978 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:52,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 14:05:53,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:53,182 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:53,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1094947053, now seen corresponding path program 1 times [2025-03-16 14:05:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:53,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536936824] [2025-03-16 14:05:53,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:53,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:53,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 14:05:53,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 14:05:53,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:53,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536936824] [2025-03-16 14:05:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536936824] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125584067] [2025-03-16 14:05:53,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:53,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:53,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:53,425 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:53,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 14:05:53,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 14:05:53,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 14:05:53,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:53,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:53,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:05:53,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:53,776 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:53,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125584067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:53,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:53,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 14:05:53,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242619245] [2025-03-16 14:05:53,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:53,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:05:53,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:53,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:05:53,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:53,777 INFO L87 Difference]: Start difference. First operand 260 states and 351 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:53,798 INFO L93 Difference]: Finished difference Result 330 states and 461 transitions. [2025-03-16 14:05:53,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:05:53,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 88 [2025-03-16 14:05:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:53,800 INFO L225 Difference]: With dead ends: 330 [2025-03-16 14:05:53,800 INFO L226 Difference]: Without dead ends: 263 [2025-03-16 14:05:53,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:53,804 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:53,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1013 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:53,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2025-03-16 14:05:53,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2025-03-16 14:05:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 228 states have (on average 1.3201754385964912) internal successors, (301), 232 states have internal predecessors, (301), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 353 transitions. [2025-03-16 14:05:53,814 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 353 transitions. Word has length 88 [2025-03-16 14:05:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:53,815 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 353 transitions. [2025-03-16 14:05:53,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 353 transitions. [2025-03-16 14:05:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 14:05:53,816 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:53,816 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:53,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-16 14:05:54,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:54,017 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:54,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash 584412876, now seen corresponding path program 1 times [2025-03-16 14:05:54,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:54,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705692616] [2025-03-16 14:05:54,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:54,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 14:05:54,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 14:05:54,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:54,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:54,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:54,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705692616] [2025-03-16 14:05:54,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705692616] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:54,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851485339] [2025-03-16 14:05:54,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:54,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:54,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:54,226 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:54,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 14:05:54,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 14:05:54,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 14:05:54,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:54,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:54,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:05:54,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:54,622 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:54,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851485339] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:54,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:54,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 14:05:54,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143926797] [2025-03-16 14:05:54,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:54,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:05:54,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:54,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:05:54,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:54,623 INFO L87 Difference]: Start difference. First operand 262 states and 353 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:54,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:54,643 INFO L93 Difference]: Finished difference Result 334 states and 465 transitions. [2025-03-16 14:05:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:05:54,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 88 [2025-03-16 14:05:54,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:54,645 INFO L225 Difference]: With dead ends: 334 [2025-03-16 14:05:54,645 INFO L226 Difference]: Without dead ends: 265 [2025-03-16 14:05:54,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:54,646 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:54,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1013 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2025-03-16 14:05:54,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264. [2025-03-16 14:05:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 230 states have (on average 1.317391304347826) internal successors, (303), 234 states have internal predecessors, (303), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 355 transitions. [2025-03-16 14:05:54,652 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 355 transitions. Word has length 88 [2025-03-16 14:05:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:54,652 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 355 transitions. [2025-03-16 14:05:54,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 355 transitions. [2025-03-16 14:05:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 14:05:54,654 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:54,654 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:54,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-16 14:05:54,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-16 14:05:54,858 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:54,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:54,858 INFO L85 PathProgramCache]: Analyzing trace with hash 78854251, now seen corresponding path program 1 times [2025-03-16 14:05:54,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:54,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393239611] [2025-03-16 14:05:54,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:54,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:55,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 14:05:55,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 14:05:55,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:55,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:55,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393239611] [2025-03-16 14:05:55,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393239611] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036544918] [2025-03-16 14:05:55,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:55,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:55,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:55,102 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:55,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 14:05:55,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 14:05:55,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 14:05:55,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:55,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:55,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:05:55,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:55,488 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:55,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036544918] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:55,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:55,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 14:05:55,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551613946] [2025-03-16 14:05:55,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:55,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:05:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:55,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:05:55,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:55,490 INFO L87 Difference]: Start difference. First operand 264 states and 355 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:55,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:55,511 INFO L93 Difference]: Finished difference Result 338 states and 470 transitions. [2025-03-16 14:05:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:05:55,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 88 [2025-03-16 14:05:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:55,514 INFO L225 Difference]: With dead ends: 338 [2025-03-16 14:05:55,514 INFO L226 Difference]: Without dead ends: 267 [2025-03-16 14:05:55,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:55,514 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:55,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1015 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2025-03-16 14:05:55,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2025-03-16 14:05:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 233 states have (on average 1.3133047210300428) internal successors, (306), 237 states have internal predecessors, (306), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 358 transitions. [2025-03-16 14:05:55,522 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 358 transitions. Word has length 88 [2025-03-16 14:05:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:55,522 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 358 transitions. [2025-03-16 14:05:55,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 358 transitions. [2025-03-16 14:05:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 14:05:55,524 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:55,524 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:55,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-16 14:05:55,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-16 14:05:55,725 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:55,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:55,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2092019406, now seen corresponding path program 1 times [2025-03-16 14:05:55,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:55,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722510150] [2025-03-16 14:05:55,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:55,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:55,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 14:05:55,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 14:05:55,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:55,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:55,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722510150] [2025-03-16 14:05:55,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722510150] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:55,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612392020] [2025-03-16 14:05:55,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:55,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:55,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:55,912 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:55,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 14:05:56,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 14:05:56,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 14:05:56,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:56,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:56,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:05:56,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-16 14:05:56,323 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:56,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612392020] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:56,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:56,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:05:56,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579521702] [2025-03-16 14:05:56,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:56,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:05:56,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:56,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:05:56,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:56,324 INFO L87 Difference]: Start difference. First operand 267 states and 358 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:56,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:56,336 INFO L93 Difference]: Finished difference Result 341 states and 471 transitions. [2025-03-16 14:05:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:05:56,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 88 [2025-03-16 14:05:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:56,338 INFO L225 Difference]: With dead ends: 341 [2025-03-16 14:05:56,338 INFO L226 Difference]: Without dead ends: 332 [2025-03-16 14:05:56,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:05:56,339 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 83 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:56,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 682 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:56,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-03-16 14:05:56,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2025-03-16 14:05:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 297 states have (on average 1.367003367003367) internal successors, (406), 301 states have internal predecessors, (406), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:56,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2025-03-16 14:05:56,349 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 88 [2025-03-16 14:05:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:56,350 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2025-03-16 14:05:56,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:56,350 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2025-03-16 14:05:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 14:05:56,352 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:56,352 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:56,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-16 14:05:56,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 14:05:56,553 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:56,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash 231055768, now seen corresponding path program 1 times [2025-03-16 14:05:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:56,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093492760] [2025-03-16 14:05:56,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:56,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:05:56,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:05:56,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:56,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:56,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:56,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093492760] [2025-03-16 14:05:56,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093492760] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:56,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840835438] [2025-03-16 14:05:56,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:56,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:56,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:56,753 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:56,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 14:05:57,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:05:57,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:05:57,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:57,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:57,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:05:57,159 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:57,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:57,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840835438] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:57,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:57,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 14:05:57,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722328142] [2025-03-16 14:05:57,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:57,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:05:57,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:57,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:05:57,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:57,176 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:57,199 INFO L93 Difference]: Finished difference Result 476 states and 680 transitions. [2025-03-16 14:05:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:05:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 116 [2025-03-16 14:05:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:57,202 INFO L225 Difference]: With dead ends: 476 [2025-03-16 14:05:57,202 INFO L226 Difference]: Without dead ends: 337 [2025-03-16 14:05:57,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:57,203 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:57,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1013 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:57,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2025-03-16 14:05:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2025-03-16 14:05:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 301 states have (on average 1.3621262458471761) internal successors, (410), 305 states have internal predecessors, (410), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 462 transitions. [2025-03-16 14:05:57,214 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 462 transitions. Word has length 116 [2025-03-16 14:05:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:57,214 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 462 transitions. [2025-03-16 14:05:57,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 462 transitions. [2025-03-16 14:05:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 14:05:57,216 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:57,216 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:57,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-16 14:05:57,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 14:05:57,416 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:57,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:57,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2113611273, now seen corresponding path program 1 times [2025-03-16 14:05:57,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:57,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77304562] [2025-03-16 14:05:57,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:57,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:57,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:05:57,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:05:57,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:57,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:57,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:57,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77304562] [2025-03-16 14:05:57,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77304562] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:57,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859921142] [2025-03-16 14:05:57,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:57,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:57,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:57,620 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:57,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 14:05:57,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:05:58,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:05:58,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:58,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:58,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:05:58,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:58,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:58,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859921142] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:58,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:58,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 14:05:58,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957437841] [2025-03-16 14:05:58,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:58,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:05:58,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:58,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:05:58,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:58,074 INFO L87 Difference]: Start difference. First operand 335 states and 462 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:58,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:58,096 INFO L93 Difference]: Finished difference Result 484 states and 690 transitions. [2025-03-16 14:05:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:05:58,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 116 [2025-03-16 14:05:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:58,098 INFO L225 Difference]: With dead ends: 484 [2025-03-16 14:05:58,098 INFO L226 Difference]: Without dead ends: 341 [2025-03-16 14:05:58,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:58,098 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:58,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1015 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2025-03-16 14:05:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2025-03-16 14:05:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 307 states have (on average 1.3550488599348534) internal successors, (416), 311 states have internal predecessors, (416), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 468 transitions. [2025-03-16 14:05:58,108 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 468 transitions. Word has length 116 [2025-03-16 14:05:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:58,108 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 468 transitions. [2025-03-16 14:05:58,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 468 transitions. [2025-03-16 14:05:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 14:05:58,110 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:58,110 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:58,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-16 14:05:58,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 14:05:58,311 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:58,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1088119274, now seen corresponding path program 1 times [2025-03-16 14:05:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:58,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557961543] [2025-03-16 14:05:58,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:58,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:58,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:05:58,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:05:58,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:58,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:58,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557961543] [2025-03-16 14:05:58,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557961543] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667225698] [2025-03-16 14:05:58,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:58,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:58,479 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:58,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-16 14:05:58,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:05:58,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:05:58,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:58,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:58,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:05:58,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:58,899 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:58,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:58,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667225698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:58,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:58,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 14:05:58,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289452340] [2025-03-16 14:05:58,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:58,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:05:58,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:58,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:05:58,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:58,901 INFO L87 Difference]: Start difference. First operand 341 states and 468 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:58,921 INFO L93 Difference]: Finished difference Result 496 states and 700 transitions. [2025-03-16 14:05:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:05:58,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 116 [2025-03-16 14:05:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:58,924 INFO L225 Difference]: With dead ends: 496 [2025-03-16 14:05:58,924 INFO L226 Difference]: Without dead ends: 347 [2025-03-16 14:05:58,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:58,925 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:58,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1013 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2025-03-16 14:05:58,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2025-03-16 14:05:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 311 states have (on average 1.3504823151125402) internal successors, (420), 315 states have internal predecessors, (420), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 472 transitions. [2025-03-16 14:05:58,935 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 472 transitions. Word has length 116 [2025-03-16 14:05:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:58,935 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 472 transitions. [2025-03-16 14:05:58,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:58,935 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 472 transitions. [2025-03-16 14:05:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 14:05:58,937 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:58,937 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:58,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-16 14:05:59,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-16 14:05:59,138 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:59,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1342855819, now seen corresponding path program 1 times [2025-03-16 14:05:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317858068] [2025-03-16 14:05:59,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:59,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:05:59,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:05:59,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:05:59,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:59,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:59,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:05:59,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317858068] [2025-03-16 14:05:59,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317858068] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:05:59,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961777472] [2025-03-16 14:05:59,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:59,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:59,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:05:59,294 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:05:59,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-16 14:05:59,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:05:59,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:05:59,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:05:59,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:05:59,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:05:59,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:05:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:05:59,739 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:05:59,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961777472] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:05:59,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:05:59,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 14:05:59,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841042909] [2025-03-16 14:05:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:05:59,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:05:59,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:05:59,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:05:59,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:59,743 INFO L87 Difference]: Start difference. First operand 345 states and 472 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:05:59,760 INFO L93 Difference]: Finished difference Result 504 states and 710 transitions. [2025-03-16 14:05:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:05:59,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 116 [2025-03-16 14:05:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:05:59,762 INFO L225 Difference]: With dead ends: 504 [2025-03-16 14:05:59,762 INFO L226 Difference]: Without dead ends: 351 [2025-03-16 14:05:59,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:05:59,763 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:05:59,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1015 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:05:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2025-03-16 14:05:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2025-03-16 14:05:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 317 states have (on average 1.3438485804416405) internal successors, (426), 321 states have internal predecessors, (426), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:05:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 478 transitions. [2025-03-16 14:05:59,769 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 478 transitions. Word has length 116 [2025-03-16 14:05:59,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:05:59,769 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 478 transitions. [2025-03-16 14:05:59,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:05:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 478 transitions. [2025-03-16 14:05:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 14:05:59,770 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:05:59,770 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:05:59,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-16 14:05:59,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:05:59,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:05:59,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:05:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1311836012, now seen corresponding path program 1 times [2025-03-16 14:05:59,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:05:59,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786444500] [2025-03-16 14:05:59,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:05:59,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:00,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:06:00,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:06:00,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:00,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:06:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786444500] [2025-03-16 14:06:00,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786444500] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291514484] [2025-03-16 14:06:00,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:00,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:00,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:00,134 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:00,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-16 14:06:00,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:06:00,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:06:00,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:00,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:00,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:00,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:06:00,580 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291514484] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:00,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:00,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 14:06:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649148855] [2025-03-16 14:06:00,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:00,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:06:00,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:00,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:06:00,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:06:00,581 INFO L87 Difference]: Start difference. First operand 351 states and 478 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:00,598 INFO L93 Difference]: Finished difference Result 516 states and 722 transitions. [2025-03-16 14:06:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:06:00,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 116 [2025-03-16 14:06:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:00,600 INFO L225 Difference]: With dead ends: 516 [2025-03-16 14:06:00,600 INFO L226 Difference]: Without dead ends: 357 [2025-03-16 14:06:00,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:06:00,601 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:00,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1015 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2025-03-16 14:06:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2025-03-16 14:06:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 323 states have (on average 1.3374613003095974) internal successors, (432), 327 states have internal predecessors, (432), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 484 transitions. [2025-03-16 14:06:00,609 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 484 transitions. Word has length 116 [2025-03-16 14:06:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:00,610 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 484 transitions. [2025-03-16 14:06:00,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 484 transitions. [2025-03-16 14:06:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 14:06:00,611 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:00,611 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:06:00,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-16 14:06:00,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 14:06:00,811 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:00,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1720660237, now seen corresponding path program 1 times [2025-03-16 14:06:00,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:00,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955701382] [2025-03-16 14:06:00,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:00,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:00,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:06:00,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:06:00,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:00,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:06:00,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:00,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955701382] [2025-03-16 14:06:00,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955701382] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:00,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960466200] [2025-03-16 14:06:00,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:00,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:00,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:00,990 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:00,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-16 14:06:01,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:06:01,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:06:01,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:01,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:01,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:01,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:06:01,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960466200] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:01,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:01,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 14:06:01,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773247017] [2025-03-16 14:06:01,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:01,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:06:01,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:01,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:06:01,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:06:01,455 INFO L87 Difference]: Start difference. First operand 357 states and 484 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:01,472 INFO L93 Difference]: Finished difference Result 528 states and 734 transitions. [2025-03-16 14:06:01,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:06:01,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 116 [2025-03-16 14:06:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:01,474 INFO L225 Difference]: With dead ends: 528 [2025-03-16 14:06:01,474 INFO L226 Difference]: Without dead ends: 363 [2025-03-16 14:06:01,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:06:01,475 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:01,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1015 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2025-03-16 14:06:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2025-03-16 14:06:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 329 states have (on average 1.331306990881459) internal successors, (438), 333 states have internal predecessors, (438), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 490 transitions. [2025-03-16 14:06:01,481 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 490 transitions. Word has length 116 [2025-03-16 14:06:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:01,482 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 490 transitions. [2025-03-16 14:06:01,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:01,482 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 490 transitions. [2025-03-16 14:06:01,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 14:06:01,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:01,483 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2025-03-16 14:06:01,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-16 14:06:01,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-16 14:06:01,684 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:01,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1215101612, now seen corresponding path program 1 times [2025-03-16 14:06:01,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:01,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985619485] [2025-03-16 14:06:01,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:01,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:01,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:06:01,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:06:01,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:01,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-03-16 14:06:01,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:01,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985619485] [2025-03-16 14:06:01,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985619485] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:01,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934316114] [2025-03-16 14:06:01,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:01,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:01,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:01,852 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:01,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-16 14:06:02,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 14:06:02,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 14:06:02,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:02,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:02,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:02,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-03-16 14:06:02,341 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:02,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934316114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:02,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:02,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:06:02,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130101918] [2025-03-16 14:06:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:02,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:06:02,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:02,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:06:02,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:02,342 INFO L87 Difference]: Start difference. First operand 363 states and 490 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:02,352 INFO L93 Difference]: Finished difference Result 534 states and 736 transitions. [2025-03-16 14:06:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:06:02,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 116 [2025-03-16 14:06:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:02,354 INFO L225 Difference]: With dead ends: 534 [2025-03-16 14:06:02,354 INFO L226 Difference]: Without dead ends: 525 [2025-03-16 14:06:02,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:02,355 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 55 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:02,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 683 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:02,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2025-03-16 14:06:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2025-03-16 14:06:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 491 states have (on average 1.3686354378818737) internal successors, (672), 495 states have internal predecessors, (672), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:02,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 724 transitions. [2025-03-16 14:06:02,364 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 724 transitions. Word has length 116 [2025-03-16 14:06:02,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:02,365 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 724 transitions. [2025-03-16 14:06:02,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 724 transitions. [2025-03-16 14:06:02,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-16 14:06:02,366 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:02,366 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 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] [2025-03-16 14:06:02,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-16 14:06:02,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-16 14:06:02,567 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:02,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:02,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1327724031, now seen corresponding path program 1 times [2025-03-16 14:06:02,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:02,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444114331] [2025-03-16 14:06:02,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:02,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:02,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 14:06:02,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 14:06:02,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:02,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2025-03-16 14:06:02,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:02,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444114331] [2025-03-16 14:06:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444114331] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297415941] [2025-03-16 14:06:02,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:02,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:02,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:02,772 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:02,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-16 14:06:03,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 14:06:03,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 14:06:03,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:03,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:03,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:03,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-16 14:06:03,285 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297415941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:03,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:03,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:06:03,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755156920] [2025-03-16 14:06:03,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:03,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:06:03,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:03,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:06:03,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:03,286 INFO L87 Difference]: Start difference. First operand 525 states and 724 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:03,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:03,297 INFO L93 Difference]: Finished difference Result 858 states and 1204 transitions. [2025-03-16 14:06:03,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:06:03,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 126 [2025-03-16 14:06:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:03,300 INFO L225 Difference]: With dead ends: 858 [2025-03-16 14:06:03,300 INFO L226 Difference]: Without dead ends: 849 [2025-03-16 14:06:03,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:03,300 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 50 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:03,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 682 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2025-03-16 14:06:03,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2025-03-16 14:06:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 815 states have (on average 1.3987730061349692) internal successors, (1140), 819 states have internal predecessors, (1140), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1192 transitions. [2025-03-16 14:06:03,313 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1192 transitions. Word has length 126 [2025-03-16 14:06:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:03,313 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1192 transitions. [2025-03-16 14:06:03,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:03,313 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1192 transitions. [2025-03-16 14:06:03,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-16 14:06:03,315 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:03,315 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:03,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-16 14:06:03,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:03,516 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:03,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1040009664, now seen corresponding path program 1 times [2025-03-16 14:06:03,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:03,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723714661] [2025-03-16 14:06:03,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:03,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:03,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-16 14:06:03,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-16 14:06:03,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:03,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-16 14:06:03,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723714661] [2025-03-16 14:06:03,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723714661] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308706710] [2025-03-16 14:06:03,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:03,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:03,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:03,695 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:03,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-16 14:06:04,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-16 14:06:04,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-16 14:06:04,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:04,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:04,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:04,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2025-03-16 14:06:04,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:04,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308706710] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:04,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:04,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:06:04,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491851096] [2025-03-16 14:06:04,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:04,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:06:04,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:04,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:06:04,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:04,257 INFO L87 Difference]: Start difference. First operand 849 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:04,271 INFO L93 Difference]: Finished difference Result 1506 states and 2140 transitions. [2025-03-16 14:06:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:06:04,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 150 [2025-03-16 14:06:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:04,276 INFO L225 Difference]: With dead ends: 1506 [2025-03-16 14:06:04,276 INFO L226 Difference]: Without dead ends: 1497 [2025-03-16 14:06:04,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:04,277 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 46 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:04,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 682 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2025-03-16 14:06:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1497. [2025-03-16 14:06:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1463 states have (on average 1.419002050580998) internal successors, (2076), 1467 states have internal predecessors, (2076), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2128 transitions. [2025-03-16 14:06:04,306 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2128 transitions. Word has length 150 [2025-03-16 14:06:04,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:04,306 INFO L471 AbstractCegarLoop]: Abstraction has 1497 states and 2128 transitions. [2025-03-16 14:06:04,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2128 transitions. [2025-03-16 14:06:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-16 14:06:04,310 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:04,310 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:04,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-16 14:06:04,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:04,511 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:04,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2030033498, now seen corresponding path program 1 times [2025-03-16 14:06:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:04,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783878349] [2025-03-16 14:06:04,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:04,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 14:06:04,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 14:06:04,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:04,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2025-03-16 14:06:04,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783878349] [2025-03-16 14:06:04,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783878349] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:04,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062862863] [2025-03-16 14:06:04,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:04,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:04,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:04,714 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:04,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-16 14:06:05,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-16 14:06:05,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-16 14:06:05,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:05,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:05,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 913 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:05,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-03-16 14:06:05,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:05,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062862863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:05,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:05,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:06:05,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567333899] [2025-03-16 14:06:05,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:05,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:06:05,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:05,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:06:05,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:05,280 INFO L87 Difference]: Start difference. First operand 1497 states and 2128 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:05,309 INFO L93 Difference]: Finished difference Result 2802 states and 4012 transitions. [2025-03-16 14:06:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:06:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 166 [2025-03-16 14:06:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:05,316 INFO L225 Difference]: With dead ends: 2802 [2025-03-16 14:06:05,316 INFO L226 Difference]: Without dead ends: 2793 [2025-03-16 14:06:05,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:05,317 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 42 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:05,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 681 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:05,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2793 states. [2025-03-16 14:06:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2793 to 2793. [2025-03-16 14:06:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2793 states, 2759 states have (on average 1.4309532439289598) internal successors, (3948), 2763 states have internal predecessors, (3948), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 4000 transitions. [2025-03-16 14:06:05,351 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 4000 transitions. Word has length 166 [2025-03-16 14:06:05,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:05,351 INFO L471 AbstractCegarLoop]: Abstraction has 2793 states and 4000 transitions. [2025-03-16 14:06:05,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:05,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 4000 transitions. [2025-03-16 14:06:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2025-03-16 14:06:05,356 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:05,356 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:05,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-16 14:06:05,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-03-16 14:06:05,556 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:05,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash 147469663, now seen corresponding path program 1 times [2025-03-16 14:06:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077225486] [2025-03-16 14:06:05,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:05,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 196 statements into 1 equivalence classes. [2025-03-16 14:06:05,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 196 of 196 statements. [2025-03-16 14:06:05,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:05,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2025-03-16 14:06:05,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:05,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077225486] [2025-03-16 14:06:05,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077225486] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:05,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666629904] [2025-03-16 14:06:05,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:05,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:05,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:05,736 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:05,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-16 14:06:06,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 196 statements into 1 equivalence classes. [2025-03-16 14:06:06,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 196 of 196 statements. [2025-03-16 14:06:06,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:06,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:06,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:06,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-16 14:06:06,356 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666629904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:06:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336551603] [2025-03-16 14:06:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:06,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:06:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:06,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:06:06,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:06,357 INFO L87 Difference]: Start difference. First operand 2793 states and 4000 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:06,378 INFO L93 Difference]: Finished difference Result 5394 states and 7756 transitions. [2025-03-16 14:06:06,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:06:06,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 196 [2025-03-16 14:06:06,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:06,395 INFO L225 Difference]: With dead ends: 5394 [2025-03-16 14:06:06,395 INFO L226 Difference]: Without dead ends: 5385 [2025-03-16 14:06:06,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:06,400 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 39 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:06,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 682 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5385 states. [2025-03-16 14:06:06,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5385 to 5385. [2025-03-16 14:06:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 5351 states have (on average 1.437488319940198) internal successors, (7692), 5355 states have internal predecessors, (7692), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 7744 transitions. [2025-03-16 14:06:06,477 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 7744 transitions. Word has length 196 [2025-03-16 14:06:06,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:06,478 INFO L471 AbstractCegarLoop]: Abstraction has 5385 states and 7744 transitions. [2025-03-16 14:06:06,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:06,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 7744 transitions. [2025-03-16 14:06:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-03-16 14:06:06,485 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:06,485 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:06,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-16 14:06:06,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-03-16 14:06:06,686 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:06,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1267649401, now seen corresponding path program 1 times [2025-03-16 14:06:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:06,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811814147] [2025-03-16 14:06:06,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:06,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-03-16 14:06:06,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-03-16 14:06:06,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:06,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2025-03-16 14:06:06,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:06,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811814147] [2025-03-16 14:06:06,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811814147] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:06,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939289049] [2025-03-16 14:06:06,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:06,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:06,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:06,875 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:06,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-16 14:06:07,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-03-16 14:06:07,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-03-16 14:06:07,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:07,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:07,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:06:07,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2025-03-16 14:06:07,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:07,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939289049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:07,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:07,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:06:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348617505] [2025-03-16 14:06:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:07,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:06:07,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:07,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:06:07,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:07,502 INFO L87 Difference]: Start difference. First operand 5385 states and 7744 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:07,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:07,524 INFO L93 Difference]: Finished difference Result 8050 states and 11628 transitions. [2025-03-16 14:06:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:06:07,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 248 [2025-03-16 14:06:07,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:07,537 INFO L225 Difference]: With dead ends: 8050 [2025-03-16 14:06:07,537 INFO L226 Difference]: Without dead ends: 5449 [2025-03-16 14:06:07,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:07,541 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 0 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:07,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 681 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:07,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5449 states. [2025-03-16 14:06:07,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5449 to 5449. [2025-03-16 14:06:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 5415 states have (on average 1.4323176361957526) internal successors, (7756), 5419 states have internal predecessors, (7756), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 7808 transitions. [2025-03-16 14:06:07,604 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 7808 transitions. Word has length 248 [2025-03-16 14:06:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:07,604 INFO L471 AbstractCegarLoop]: Abstraction has 5449 states and 7808 transitions. [2025-03-16 14:06:07,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 7808 transitions. [2025-03-16 14:06:07,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-03-16 14:06:07,612 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:07,612 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:07,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-16 14:06:07,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:07,812 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:07,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:07,813 INFO L85 PathProgramCache]: Analyzing trace with hash 542254184, now seen corresponding path program 1 times [2025-03-16 14:06:07,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:07,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838532939] [2025-03-16 14:06:07,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:07,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:07,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-03-16 14:06:07,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-03-16 14:06:07,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:07,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2025-03-16 14:06:08,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:08,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838532939] [2025-03-16 14:06:08,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838532939] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:08,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363288685] [2025-03-16 14:06:08,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:08,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:08,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:08,009 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:08,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-16 14:06:08,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-03-16 14:06:08,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-03-16 14:06:08,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:08,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:08,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:08,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2025-03-16 14:06:08,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:08,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363288685] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:08,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:08,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:06:08,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404761666] [2025-03-16 14:06:08,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:08,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:06:08,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:08,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:06:08,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:08,712 INFO L87 Difference]: Start difference. First operand 5449 states and 7808 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:08,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:08,743 INFO L93 Difference]: Finished difference Result 10706 states and 15372 transitions. [2025-03-16 14:06:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:06:08,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 248 [2025-03-16 14:06:08,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:08,765 INFO L225 Difference]: With dead ends: 10706 [2025-03-16 14:06:08,766 INFO L226 Difference]: Without dead ends: 10697 [2025-03-16 14:06:08,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:08,769 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 22 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:08,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 681 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2025-03-16 14:06:08,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 10697. [2025-03-16 14:06:08,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10697 states, 10663 states have (on average 1.4356184938572634) internal successors, (15308), 10667 states have internal predecessors, (15308), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10697 states to 10697 states and 15360 transitions. [2025-03-16 14:06:08,886 INFO L78 Accepts]: Start accepts. Automaton has 10697 states and 15360 transitions. Word has length 248 [2025-03-16 14:06:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:08,886 INFO L471 AbstractCegarLoop]: Abstraction has 10697 states and 15360 transitions. [2025-03-16 14:06:08,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 10697 states and 15360 transitions. [2025-03-16 14:06:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2025-03-16 14:06:08,902 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:08,902 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:08,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-16 14:06:09,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:09,102 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:09,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:09,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1883691957, now seen corresponding path program 1 times [2025-03-16 14:06:09,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:09,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938588392] [2025-03-16 14:06:09,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:09,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:09,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 292 statements into 1 equivalence classes. [2025-03-16 14:06:09,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 292 of 292 statements. [2025-03-16 14:06:09,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:09,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2025-03-16 14:06:09,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:09,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938588392] [2025-03-16 14:06:09,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938588392] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:09,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846900355] [2025-03-16 14:06:09,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:09,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:09,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:09,333 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:09,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-16 14:06:09,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 292 statements into 1 equivalence classes. [2025-03-16 14:06:09,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 292 of 292 statements. [2025-03-16 14:06:09,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:09,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:09,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:06:09,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2025-03-16 14:06:09,984 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:09,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846900355] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:09,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:06:09,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803450786] [2025-03-16 14:06:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:09,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:06:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:09,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:06:09,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:09,985 INFO L87 Difference]: Start difference. First operand 10697 states and 15360 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:10,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:10,023 INFO L93 Difference]: Finished difference Result 16082 states and 23180 transitions. [2025-03-16 14:06:10,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:06:10,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 292 [2025-03-16 14:06:10,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:10,041 INFO L225 Difference]: With dead ends: 16082 [2025-03-16 14:06:10,041 INFO L226 Difference]: Without dead ends: 10825 [2025-03-16 14:06:10,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:10,049 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 0 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:10,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 681 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2025-03-16 14:06:10,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 10825. [2025-03-16 14:06:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10825 states, 10791 states have (on average 1.430451302010935) internal successors, (15436), 10795 states have internal predecessors, (15436), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10825 states to 10825 states and 15488 transitions. [2025-03-16 14:06:10,163 INFO L78 Accepts]: Start accepts. Automaton has 10825 states and 15488 transitions. Word has length 292 [2025-03-16 14:06:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:10,164 INFO L471 AbstractCegarLoop]: Abstraction has 10825 states and 15488 transitions. [2025-03-16 14:06:10,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 10825 states and 15488 transitions. [2025-03-16 14:06:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2025-03-16 14:06:10,178 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:10,178 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:10,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-16 14:06:10,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-16 14:06:10,379 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:10,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:10,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1404534422, now seen corresponding path program 1 times [2025-03-16 14:06:10,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:10,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775448537] [2025-03-16 14:06:10,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:10,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:10,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 292 statements into 1 equivalence classes. [2025-03-16 14:06:10,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 292 of 292 statements. [2025-03-16 14:06:10,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:10,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2025-03-16 14:06:10,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:10,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775448537] [2025-03-16 14:06:10,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775448537] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:10,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51748560] [2025-03-16 14:06:10,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:10,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:10,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:10,626 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:10,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-16 14:06:11,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 292 statements into 1 equivalence classes. [2025-03-16 14:06:11,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 292 of 292 statements. [2025-03-16 14:06:11,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:11,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:11,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:11,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2025-03-16 14:06:11,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:06:11,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51748560] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:11,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:06:11,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-16 14:06:11,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483645951] [2025-03-16 14:06:11,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:11,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:06:11,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:11,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:06:11,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:11,384 INFO L87 Difference]: Start difference. First operand 10825 states and 15488 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:11,437 INFO L93 Difference]: Finished difference Result 21458 states and 30732 transitions. [2025-03-16 14:06:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:06:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 292 [2025-03-16 14:06:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:11,469 INFO L225 Difference]: With dead ends: 21458 [2025-03-16 14:06:11,469 INFO L226 Difference]: Without dead ends: 21449 [2025-03-16 14:06:11,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:11,476 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 20 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:11,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 681 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:11,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21449 states. [2025-03-16 14:06:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21449 to 21449. [2025-03-16 14:06:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21449 states, 21415 states have (on average 1.4320803175344385) internal successors, (30668), 21419 states have internal predecessors, (30668), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21449 states to 21449 states and 30720 transitions. [2025-03-16 14:06:11,764 INFO L78 Accepts]: Start accepts. Automaton has 21449 states and 30720 transitions. Word has length 292 [2025-03-16 14:06:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:11,764 INFO L471 AbstractCegarLoop]: Abstraction has 21449 states and 30720 transitions. [2025-03-16 14:06:11,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-16 14:06:11,764 INFO L276 IsEmpty]: Start isEmpty. Operand 21449 states and 30720 transitions. [2025-03-16 14:06:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2025-03-16 14:06:11,790 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:11,790 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:11,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-16 14:06:11,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-16 14:06:11,992 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:11,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1359751708, now seen corresponding path program 1 times [2025-03-16 14:06:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:11,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470956375] [2025-03-16 14:06:11,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:12,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 350 statements into 1 equivalence classes. [2025-03-16 14:06:12,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 350 of 350 statements. [2025-03-16 14:06:12,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:12,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2025-03-16 14:06:12,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:12,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470956375] [2025-03-16 14:06:12,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470956375] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:12,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344489545] [2025-03-16 14:06:12,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:12,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:12,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:12,205 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:12,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-16 14:06:12,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 350 statements into 1 equivalence classes. [2025-03-16 14:06:12,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 350 of 350 statements. [2025-03-16 14:06:12,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:12,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:12,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 14:06:12,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2025-03-16 14:06:12,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 14:06:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2025-03-16 14:06:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344489545] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 14:06:12,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 14:06:12,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2025-03-16 14:06:12,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951981738] [2025-03-16 14:06:12,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 14:06:12,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 14:06:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:12,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 14:06:12,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:06:12,989 INFO L87 Difference]: Start difference. First operand 21449 states and 30720 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-16 14:06:13,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:13,083 INFO L93 Difference]: Finished difference Result 42898 states and 61442 transitions. [2025-03-16 14:06:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 14:06:13,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 350 [2025-03-16 14:06:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:13,108 INFO L225 Difference]: With dead ends: 42898 [2025-03-16 14:06:13,109 INFO L226 Difference]: Without dead ends: 21452 [2025-03-16 14:06:13,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 697 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:06:13,131 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 0 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:13,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1025 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:13,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21452 states. [2025-03-16 14:06:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21452 to 21452. [2025-03-16 14:06:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21452 states, 21418 states have (on average 1.4320197964329069) internal successors, (30671), 21422 states have internal predecessors, (30671), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21452 states to 21452 states and 30723 transitions. [2025-03-16 14:06:13,344 INFO L78 Accepts]: Start accepts. Automaton has 21452 states and 30723 transitions. Word has length 350 [2025-03-16 14:06:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:13,344 INFO L471 AbstractCegarLoop]: Abstraction has 21452 states and 30723 transitions. [2025-03-16 14:06:13,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 1 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-16 14:06:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 21452 states and 30723 transitions. [2025-03-16 14:06:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2025-03-16 14:06:13,365 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:13,365 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:13,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-16 14:06:13,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-16 14:06:13,566 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:13,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:13,566 INFO L85 PathProgramCache]: Analyzing trace with hash 717346116, now seen corresponding path program 2 times [2025-03-16 14:06:13,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789183801] [2025-03-16 14:06:13,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 14:06:13,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:13,697 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 353 statements into 2 equivalence classes. [2025-03-16 14:06:13,746 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 353 of 353 statements. [2025-03-16 14:06:13,746 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 14:06:13,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2025-03-16 14:06:13,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789183801] [2025-03-16 14:06:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789183801] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101593095] [2025-03-16 14:06:13,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 14:06:13,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:13,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:13,958 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:13,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-16 14:06:14,597 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 353 statements into 2 equivalence classes. [2025-03-16 14:06:17,523 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 353 of 353 statements. [2025-03-16 14:06:17,523 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 14:06:17,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:17,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-16 14:06:17,535 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2025-03-16 14:06:17,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 14:06:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2025-03-16 14:06:17,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101593095] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 14:06:17,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 14:06:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2025-03-16 14:06:17,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38924143] [2025-03-16 14:06:17,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 14:06:17,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-16 14:06:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:17,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-16 14:06:17,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-16 14:06:17,655 INFO L87 Difference]: Start difference. First operand 21452 states and 30723 transitions. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 14:06:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:17,802 INFO L93 Difference]: Finished difference Result 42905 states and 61457 transitions. [2025-03-16 14:06:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-16 14:06:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 353 [2025-03-16 14:06:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:17,829 INFO L225 Difference]: With dead ends: 42905 [2025-03-16 14:06:17,829 INFO L226 Difference]: Without dead ends: 21459 [2025-03-16 14:06:17,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-16 14:06:17,851 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 0 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:17,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1702 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21459 states. [2025-03-16 14:06:18,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21459 to 21459. [2025-03-16 14:06:18,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21459 states, 21425 states have (on average 1.4318786464410735) internal successors, (30678), 21429 states have internal predecessors, (30678), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-16 14:06:18,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21459 states to 21459 states and 30730 transitions. [2025-03-16 14:06:18,064 INFO L78 Accepts]: Start accepts. Automaton has 21459 states and 30730 transitions. Word has length 353 [2025-03-16 14:06:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:18,064 INFO L471 AbstractCegarLoop]: Abstraction has 21459 states and 30730 transitions. [2025-03-16 14:06:18,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 14:06:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 21459 states and 30730 transitions. [2025-03-16 14:06:18,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2025-03-16 14:06:18,083 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:18,083 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:18,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-16 14:06:18,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-16 14:06:18,288 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:18,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:18,289 INFO L85 PathProgramCache]: Analyzing trace with hash 871765128, now seen corresponding path program 3 times [2025-03-16 14:06:18,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:18,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634968723] [2025-03-16 14:06:18,289 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 14:06:18,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:18,508 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 363 statements into 9 equivalence classes. [2025-03-16 14:06:18,606 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 65 of 363 statements. [2025-03-16 14:06:18,607 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-16 14:06:18,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2025-03-16 14:06:19,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634968723] [2025-03-16 14:06:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634968723] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:19,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:06:19,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 14:06:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815985329] [2025-03-16 14:06:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:19,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 14:06:19,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:19,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 14:06:19,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:06:19,041 INFO L87 Difference]: Start difference. First operand 21459 states and 30730 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:06:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:23,584 INFO L93 Difference]: Finished difference Result 42863 states and 61399 transitions. [2025-03-16 14:06:23,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 14:06:23,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 363 [2025-03-16 14:06:23,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:23,614 INFO L225 Difference]: With dead ends: 42863 [2025-03-16 14:06:23,614 INFO L226 Difference]: Without dead ends: 21593 [2025-03-16 14:06:23,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-16 14:06:23,633 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 338 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:23,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 1550 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-03-16 14:06:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21593 states. [2025-03-16 14:06:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21593 to 21555. [2025-03-16 14:06:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21555 states, 21506 states have (on average 1.4309960011159677) internal successors, (30775), 21514 states have internal predecessors, (30775), 41 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (41), 35 states have call predecessors, (41), 41 states have call successors, (41) [2025-03-16 14:06:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21555 states to 21555 states and 30857 transitions. [2025-03-16 14:06:23,868 INFO L78 Accepts]: Start accepts. Automaton has 21555 states and 30857 transitions. Word has length 363 [2025-03-16 14:06:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:23,868 INFO L471 AbstractCegarLoop]: Abstraction has 21555 states and 30857 transitions. [2025-03-16 14:06:23,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 6 states have internal predecessors, (135), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-16 14:06:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 21555 states and 30857 transitions. [2025-03-16 14:06:23,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2025-03-16 14:06:23,888 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:23,888 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:23,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-16 14:06:23,889 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:23,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1741672277, now seen corresponding path program 1 times [2025-03-16 14:06:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:23,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388672721] [2025-03-16 14:06:23,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:24,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes. [2025-03-16 14:06:24,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements. [2025-03-16 14:06:24,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:24,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2025-03-16 14:06:24,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388672721] [2025-03-16 14:06:24,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388672721] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186875281] [2025-03-16 14:06:24,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:24,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:24,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:24,249 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:24,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-16 14:06:25,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 387 statements into 1 equivalence classes. [2025-03-16 14:06:25,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 387 of 387 statements. [2025-03-16 14:06:25,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:25,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:25,190 INFO L256 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-16 14:06:25,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2025-03-16 14:06:25,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 14:06:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 761 trivial. 0 not checked. [2025-03-16 14:06:25,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186875281] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 14:06:25,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 14:06:25,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 12, 13] total 18 [2025-03-16 14:06:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949797097] [2025-03-16 14:06:25,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 14:06:25,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-16 14:06:25,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:25,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-16 14:06:25,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2025-03-16 14:06:25,433 INFO L87 Difference]: Start difference. First operand 21555 states and 30857 transitions. Second operand has 18 states, 18 states have (on average 10.5) internal successors, (189), 18 states have internal predecessors, (189), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 14:06:25,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:25,629 INFO L93 Difference]: Finished difference Result 43115 states and 61727 transitions. [2025-03-16 14:06:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-16 14:06:25,630 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.5) internal successors, (189), 18 states have internal predecessors, (189), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 387 [2025-03-16 14:06:25,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:25,653 INFO L225 Difference]: With dead ends: 43115 [2025-03-16 14:06:25,653 INFO L226 Difference]: Without dead ends: 21572 [2025-03-16 14:06:25,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 752 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2025-03-16 14:06:25,666 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 10 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:25,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2354 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 14:06:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21572 states. [2025-03-16 14:06:25,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21572 to 21566. [2025-03-16 14:06:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21566 states, 21516 states have (on average 1.4308421639709983) internal successors, (30786), 21524 states have internal predecessors, (30786), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 36 states have call predecessors, (42), 42 states have call successors, (42) [2025-03-16 14:06:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21566 states to 21566 states and 30870 transitions. [2025-03-16 14:06:25,866 INFO L78 Accepts]: Start accepts. Automaton has 21566 states and 30870 transitions. Word has length 387 [2025-03-16 14:06:25,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:25,868 INFO L471 AbstractCegarLoop]: Abstraction has 21566 states and 30870 transitions. [2025-03-16 14:06:25,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.5) internal successors, (189), 18 states have internal predecessors, (189), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 14:06:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand 21566 states and 30870 transitions. [2025-03-16 14:06:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2025-03-16 14:06:25,888 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:25,888 INFO L218 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:25,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-03-16 14:06:26,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:26,089 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:26,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash -340721123, now seen corresponding path program 2 times [2025-03-16 14:06:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:26,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692901935] [2025-03-16 14:06:26,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 14:06:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:26,262 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 394 statements into 2 equivalence classes. [2025-03-16 14:06:26,293 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 394 of 394 statements. [2025-03-16 14:06:26,293 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 14:06:26,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2025-03-16 14:06:26,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:26,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692901935] [2025-03-16 14:06:26,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692901935] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:26,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138611229] [2025-03-16 14:06:26,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 14:06:26,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:26,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:26,447 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:26,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-16 14:06:27,227 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 394 statements into 2 equivalence classes. [2025-03-16 14:06:28,634 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 394 of 394 statements. [2025-03-16 14:06:28,634 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 14:06:28,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:28,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 14:06:28,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2025-03-16 14:06:28,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 14:06:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2025-03-16 14:06:28,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138611229] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 14:06:28,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 14:06:28,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-03-16 14:06:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751210903] [2025-03-16 14:06:28,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 14:06:28,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 14:06:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:28,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 14:06:28,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-16 14:06:28,738 INFO L87 Difference]: Start difference. First operand 21566 states and 30870 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 14:06:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:28,988 INFO L93 Difference]: Finished difference Result 43129 states and 61743 transitions. [2025-03-16 14:06:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 14:06:28,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 394 [2025-03-16 14:06:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:29,018 INFO L225 Difference]: With dead ends: 43129 [2025-03-16 14:06:29,018 INFO L226 Difference]: Without dead ends: 21607 [2025-03-16 14:06:29,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-16 14:06:29,039 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 51 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:29,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 2001 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 14:06:29,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21607 states. [2025-03-16 14:06:29,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21607 to 21601. [2025-03-16 14:06:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21601 states, 21546 states have (on average 1.4304743339831059) internal successors, (30821), 21554 states have internal predecessors, (30821), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 41 states have call predecessors, (47), 47 states have call successors, (47) [2025-03-16 14:06:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21601 states to 21601 states and 30915 transitions. [2025-03-16 14:06:29,251 INFO L78 Accepts]: Start accepts. Automaton has 21601 states and 30915 transitions. Word has length 394 [2025-03-16 14:06:29,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:29,251 INFO L471 AbstractCegarLoop]: Abstraction has 21601 states and 30915 transitions. [2025-03-16 14:06:29,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 14:06:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 21601 states and 30915 transitions. [2025-03-16 14:06:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2025-03-16 14:06:29,338 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:29,338 INFO L218 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:29,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-03-16 14:06:29,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:29,539 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:29,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1933632591, now seen corresponding path program 3 times [2025-03-16 14:06:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349460483] [2025-03-16 14:06:29,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 14:06:29,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:29,684 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 409 statements into 9 equivalence classes. [2025-03-16 14:06:29,787 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 89 of 409 statements. [2025-03-16 14:06:29,788 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-16 14:06:29,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2025-03-16 14:06:30,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:30,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349460483] [2025-03-16 14:06:30,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349460483] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:30,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:06:30,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 14:06:30,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289100156] [2025-03-16 14:06:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:30,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 14:06:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:30,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 14:06:30,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:06:30,663 INFO L87 Difference]: Start difference. First operand 21601 states and 30915 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 14:06:34,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:34,704 INFO L93 Difference]: Finished difference Result 43270 states and 61933 transitions. [2025-03-16 14:06:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-16 14:06:34,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 409 [2025-03-16 14:06:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:34,729 INFO L225 Difference]: With dead ends: 43270 [2025-03-16 14:06:34,730 INFO L226 Difference]: Without dead ends: 21781 [2025-03-16 14:06:34,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-16 14:06:34,750 INFO L435 NwaCegarLoop]: 348 mSDtfsCounter, 155 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:34,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1762 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-03-16 14:06:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21781 states. [2025-03-16 14:06:34,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21781 to 21684. [2025-03-16 14:06:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21684 states, 21616 states have (on average 1.4297279792746114) internal successors, (30905), 21628 states have internal predecessors, (30905), 60 states have call successors, (60), 7 states have call predecessors, (60), 7 states have return successors, (60), 51 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-16 14:06:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21684 states to 21684 states and 31025 transitions. [2025-03-16 14:06:34,963 INFO L78 Accepts]: Start accepts. Automaton has 21684 states and 31025 transitions. Word has length 409 [2025-03-16 14:06:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:34,963 INFO L471 AbstractCegarLoop]: Abstraction has 21684 states and 31025 transitions. [2025-03-16 14:06:34,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 14:06:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 21684 states and 31025 transitions. [2025-03-16 14:06:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2025-03-16 14:06:34,982 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:34,982 INFO L218 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:34,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-16 14:06:34,982 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:34,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash -761880506, now seen corresponding path program 1 times [2025-03-16 14:06:34,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:34,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573923298] [2025-03-16 14:06:34,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:34,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:35,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 429 statements into 1 equivalence classes. [2025-03-16 14:06:35,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 429 of 429 statements. [2025-03-16 14:06:35,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:35,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2025-03-16 14:06:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573923298] [2025-03-16 14:06:35,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573923298] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729752042] [2025-03-16 14:06:35,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:35,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:35,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:35,448 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:35,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-16 14:06:36,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 429 statements into 1 equivalence classes. [2025-03-16 14:06:36,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 429 of 429 statements. [2025-03-16 14:06:36,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:36,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:36,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 2003 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 14:06:36,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:36,473 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 879 trivial. 0 not checked. [2025-03-16 14:06:36,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 14:06:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2025-03-16 14:06:36,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729752042] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 14:06:36,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 14:06:36,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 18 [2025-03-16 14:06:36,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396433688] [2025-03-16 14:06:36,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 14:06:36,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-16 14:06:36,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:36,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-16 14:06:36,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2025-03-16 14:06:36,574 INFO L87 Difference]: Start difference. First operand 21684 states and 31025 transitions. Second operand has 18 states, 18 states have (on average 12.222222222222221) internal successors, (220), 18 states have internal predecessors, (220), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 14:06:36,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:36,898 INFO L93 Difference]: Finished difference Result 43365 states and 62057 transitions. [2025-03-16 14:06:36,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-16 14:06:36,899 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.222222222222221) internal successors, (220), 18 states have internal predecessors, (220), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 429 [2025-03-16 14:06:36,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:36,923 INFO L225 Difference]: With dead ends: 43365 [2025-03-16 14:06:36,924 INFO L226 Difference]: Without dead ends: 21753 [2025-03-16 14:06:36,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2025-03-16 14:06:36,931 INFO L435 NwaCegarLoop]: 337 mSDtfsCounter, 97 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:36,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2695 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 14:06:36,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21753 states. [2025-03-16 14:06:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21753 to 21747. [2025-03-16 14:06:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21747 states, 21670 states have (on average 1.4290724503922474) internal successors, (30968), 21682 states have internal predecessors, (30968), 69 states have call successors, (69), 7 states have call predecessors, (69), 7 states have return successors, (69), 60 states have call predecessors, (69), 69 states have call successors, (69) [2025-03-16 14:06:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21747 states to 21747 states and 31106 transitions. [2025-03-16 14:06:37,110 INFO L78 Accepts]: Start accepts. Automaton has 21747 states and 31106 transitions. Word has length 429 [2025-03-16 14:06:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:37,110 INFO L471 AbstractCegarLoop]: Abstraction has 21747 states and 31106 transitions. [2025-03-16 14:06:37,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.222222222222221) internal successors, (220), 18 states have internal predecessors, (220), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 14:06:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 21747 states and 31106 transitions. [2025-03-16 14:06:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2025-03-16 14:06:37,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:37,129 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:37,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-03-16 14:06:37,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-16 14:06:37,329 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:37,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:37,330 INFO L85 PathProgramCache]: Analyzing trace with hash -54165384, now seen corresponding path program 2 times [2025-03-16 14:06:37,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:37,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457520977] [2025-03-16 14:06:37,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 14:06:37,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:37,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 456 statements into 2 equivalence classes. [2025-03-16 14:06:37,509 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 456 of 456 statements. [2025-03-16 14:06:37,509 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 14:06:37,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1172 trivial. 0 not checked. [2025-03-16 14:06:37,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:37,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457520977] [2025-03-16 14:06:37,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457520977] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:37,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302652428] [2025-03-16 14:06:37,654 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 14:06:37,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:37,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:37,656 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:37,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-16 14:06:38,390 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 456 statements into 2 equivalence classes. [2025-03-16 14:06:39,675 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 456 of 456 statements. [2025-03-16 14:06:39,675 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 14:06:39,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:39,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 14:06:39,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2025-03-16 14:06:39,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 14:06:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1168 trivial. 0 not checked. [2025-03-16 14:06:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302652428] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 14:06:39,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 14:06:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-03-16 14:06:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563355570] [2025-03-16 14:06:39,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 14:06:39,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 14:06:39,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:39,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 14:06:39,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-16 14:06:39,767 INFO L87 Difference]: Start difference. First operand 21747 states and 31106 transitions. Second operand has 10 states, 10 states have (on average 19.6) internal successors, (196), 10 states have internal predecessors, (196), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 14:06:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:39,946 INFO L93 Difference]: Finished difference Result 43392 states and 62087 transitions. [2025-03-16 14:06:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 14:06:39,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 19.6) internal successors, (196), 10 states have internal predecessors, (196), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 456 [2025-03-16 14:06:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:39,973 INFO L225 Difference]: With dead ends: 43392 [2025-03-16 14:06:39,973 INFO L226 Difference]: Without dead ends: 21788 [2025-03-16 14:06:39,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 906 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-16 14:06:39,994 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 53 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:39,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1360 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 14:06:40,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21788 states. [2025-03-16 14:06:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21788 to 21782. [2025-03-16 14:06:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21782 states, 21700 states have (on average 1.4287096774193548) internal successors, (31003), 21712 states have internal predecessors, (31003), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:06:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21782 states to 21782 states and 31151 transitions. [2025-03-16 14:06:40,196 INFO L78 Accepts]: Start accepts. Automaton has 21782 states and 31151 transitions. Word has length 456 [2025-03-16 14:06:40,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:40,196 INFO L471 AbstractCegarLoop]: Abstraction has 21782 states and 31151 transitions. [2025-03-16 14:06:40,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.6) internal successors, (196), 10 states have internal predecessors, (196), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 14:06:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 21782 states and 31151 transitions. [2025-03-16 14:06:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:06:40,214 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:40,214 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:40,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-16 14:06:40,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:40,415 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:40,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:40,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1426568500, now seen corresponding path program 3 times [2025-03-16 14:06:40,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:40,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374559932] [2025-03-16 14:06:40,416 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 14:06:40,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:40,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 471 statements into 16 equivalence classes. [2025-03-16 14:06:40,754 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 141 of 471 statements. [2025-03-16 14:06:40,754 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-16 14:06:40,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2025-03-16 14:06:40,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374559932] [2025-03-16 14:06:40,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374559932] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:06:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769077540] [2025-03-16 14:06:40,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 14:06:40,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:40,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:06:40,853 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:06:40,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-16 14:06:41,569 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 471 statements into 16 equivalence classes. [2025-03-16 14:06:54,919 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 141 of 471 statements. [2025-03-16 14:06:54,919 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-16 14:06:54,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:54,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 14:06:54,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:06:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2025-03-16 14:06:54,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 14:06:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2025-03-16 14:06:55,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769077540] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 14:06:55,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 14:06:55,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-16 14:06:55,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504629807] [2025-03-16 14:06:55,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 14:06:55,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 14:06:55,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:55,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 14:06:55,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:06:55,016 INFO L87 Difference]: Start difference. First operand 21782 states and 31151 transitions. Second operand has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:55,219 INFO L93 Difference]: Finished difference Result 27231 states and 38907 transitions. [2025-03-16 14:06:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 14:06:55,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:06:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:55,251 INFO L225 Difference]: With dead ends: 27231 [2025-03-16 14:06:55,251 INFO L226 Difference]: Without dead ends: 27222 [2025-03-16 14:06:55,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 941 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2025-03-16 14:06:55,260 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 686 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:55,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1186 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 14:06:55,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27222 states. [2025-03-16 14:06:55,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27222 to 16470. [2025-03-16 14:06:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16470 states, 16388 states have (on average 1.4270807908225531) internal successors, (23387), 16400 states have internal predecessors, (23387), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:06:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16470 states to 16470 states and 23535 transitions. [2025-03-16 14:06:55,530 INFO L78 Accepts]: Start accepts. Automaton has 16470 states and 23535 transitions. Word has length 471 [2025-03-16 14:06:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:55,531 INFO L471 AbstractCegarLoop]: Abstraction has 16470 states and 23535 transitions. [2025-03-16 14:06:55,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 16470 states and 23535 transitions. [2025-03-16 14:06:55,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:06:55,543 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:55,544 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:55,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-16 14:06:55,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:06:55,744 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:55,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1345935436, now seen corresponding path program 4 times [2025-03-16 14:06:55,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:55,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107146015] [2025-03-16 14:06:55,745 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 14:06:55,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:55,882 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 471 statements into 2 equivalence classes. [2025-03-16 14:06:55,916 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:06:55,917 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-16 14:06:55,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 897 trivial. 0 not checked. [2025-03-16 14:06:56,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:56,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107146015] [2025-03-16 14:06:56,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107146015] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:56,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:06:56,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 14:06:56,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068004487] [2025-03-16 14:06:56,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:56,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 14:06:56,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:56,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 14:06:56,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:56,247 INFO L87 Difference]: Start difference. First operand 16470 states and 23535 transitions. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:56,560 INFO L93 Difference]: Finished difference Result 43935 states and 63099 transitions. [2025-03-16 14:06:56,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 14:06:56,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:06:56,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:56,589 INFO L225 Difference]: With dead ends: 43935 [2025-03-16 14:06:56,589 INFO L226 Difference]: Without dead ends: 27990 [2025-03-16 14:06:56,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:06:56,595 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 62 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:56,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1189 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 14:06:56,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27990 states. [2025-03-16 14:06:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27990 to 19734. [2025-03-16 14:06:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19734 states, 19652 states have (on average 1.404996946875636) internal successors, (27611), 19664 states have internal predecessors, (27611), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:06:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19734 states to 19734 states and 27759 transitions. [2025-03-16 14:06:56,789 INFO L78 Accepts]: Start accepts. Automaton has 19734 states and 27759 transitions. Word has length 471 [2025-03-16 14:06:56,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:56,789 INFO L471 AbstractCegarLoop]: Abstraction has 19734 states and 27759 transitions. [2025-03-16 14:06:56,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 19734 states and 27759 transitions. [2025-03-16 14:06:56,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:06:56,807 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:56,807 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:56,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-16 14:06:56,807 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:56,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1987500889, now seen corresponding path program 1 times [2025-03-16 14:06:56,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:56,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961941263] [2025-03-16 14:06:56,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:56,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:56,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:06:56,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:06:56,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:56,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2025-03-16 14:06:57,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:57,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961941263] [2025-03-16 14:06:57,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961941263] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:57,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:06:57,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 14:06:57,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996521051] [2025-03-16 14:06:57,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:57,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 14:06:57,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:57,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 14:06:57,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:57,321 INFO L87 Difference]: Start difference. First operand 19734 states and 27759 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:57,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:57,599 INFO L93 Difference]: Finished difference Result 56415 states and 79227 transitions. [2025-03-16 14:06:57,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 14:06:57,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:06:57,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:57,641 INFO L225 Difference]: With dead ends: 56415 [2025-03-16 14:06:57,641 INFO L226 Difference]: Without dead ends: 37206 [2025-03-16 14:06:57,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:06:57,665 INFO L435 NwaCegarLoop]: 303 mSDtfsCounter, 147 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:57,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 891 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 14:06:57,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37206 states. [2025-03-16 14:06:57,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37206 to 23766. [2025-03-16 14:06:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23766 states, 23684 states have (on average 1.368476608680966) internal successors, (32411), 23696 states have internal predecessors, (32411), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:06:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23766 states to 23766 states and 32559 transitions. [2025-03-16 14:06:58,025 INFO L78 Accepts]: Start accepts. Automaton has 23766 states and 32559 transitions. Word has length 471 [2025-03-16 14:06:58,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:58,025 INFO L471 AbstractCegarLoop]: Abstraction has 23766 states and 32559 transitions. [2025-03-16 14:06:58,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand 23766 states and 32559 transitions. [2025-03-16 14:06:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:06:58,044 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:58,044 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:58,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-16 14:06:58,045 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:58,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash 59559777, now seen corresponding path program 1 times [2025-03-16 14:06:58,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:58,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399538091] [2025-03-16 14:06:58,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:58,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:58,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:06:58,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:06:58,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:58,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2025-03-16 14:06:58,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399538091] [2025-03-16 14:06:58,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399538091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:58,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:06:58,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 14:06:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692060500] [2025-03-16 14:06:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:58,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 14:06:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:58,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 14:06:58,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:06:58,478 INFO L87 Difference]: Start difference. First operand 23766 states and 32559 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:58,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:58,758 INFO L93 Difference]: Finished difference Result 60255 states and 83451 transitions. [2025-03-16 14:06:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 14:06:58,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:06:58,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:58,791 INFO L225 Difference]: With dead ends: 60255 [2025-03-16 14:06:58,791 INFO L226 Difference]: Without dead ends: 37014 [2025-03-16 14:06:58,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:06:58,816 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 117 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:58,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 893 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 14:06:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37014 states. [2025-03-16 14:06:59,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37014 to 30486. [2025-03-16 14:06:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30486 states, 30404 states have (on average 1.3628141034074464) internal successors, (41435), 30416 states have internal predecessors, (41435), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:06:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30486 states to 30486 states and 41583 transitions. [2025-03-16 14:06:59,088 INFO L78 Accepts]: Start accepts. Automaton has 30486 states and 41583 transitions. Word has length 471 [2025-03-16 14:06:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:59,088 INFO L471 AbstractCegarLoop]: Abstraction has 30486 states and 41583 transitions. [2025-03-16 14:06:59,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:59,088 INFO L276 IsEmpty]: Start isEmpty. Operand 30486 states and 41583 transitions. [2025-03-16 14:06:59,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:06:59,112 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:59,112 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:59,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-16 14:06:59,112 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:59,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:59,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1336676195, now seen corresponding path program 1 times [2025-03-16 14:06:59,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:59,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325867751] [2025-03-16 14:06:59,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:59,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:06:59,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:06:59,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:06:59,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:06:59,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:06:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2025-03-16 14:06:59,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:06:59,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325867751] [2025-03-16 14:06:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325867751] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:06:59,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:06:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 14:06:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874223363] [2025-03-16 14:06:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:06:59,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:06:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:06:59,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:06:59,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:06:59,420 INFO L87 Difference]: Start difference. First operand 30486 states and 41583 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:59,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:06:59,639 INFO L93 Difference]: Finished difference Result 61023 states and 83259 transitions. [2025-03-16 14:06:59,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:06:59,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:06:59,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:06:59,664 INFO L225 Difference]: With dead ends: 61023 [2025-03-16 14:06:59,665 INFO L226 Difference]: Without dead ends: 31062 [2025-03-16 14:06:59,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:06:59,675 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:06:59,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1013 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:06:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31062 states. [2025-03-16 14:06:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31062 to 30870. [2025-03-16 14:06:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30870 states, 30788 states have (on average 1.358288943744316) internal successors, (41819), 30800 states have internal predecessors, (41819), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:06:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30870 states to 30870 states and 41967 transitions. [2025-03-16 14:06:59,924 INFO L78 Accepts]: Start accepts. Automaton has 30870 states and 41967 transitions. Word has length 471 [2025-03-16 14:06:59,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:06:59,924 INFO L471 AbstractCegarLoop]: Abstraction has 30870 states and 41967 transitions. [2025-03-16 14:06:59,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:06:59,924 INFO L276 IsEmpty]: Start isEmpty. Operand 30870 states and 41967 transitions. [2025-03-16 14:06:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:06:59,948 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:06:59,948 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:06:59,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-16 14:06:59,948 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:06:59,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:06:59,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1504325849, now seen corresponding path program 1 times [2025-03-16 14:06:59,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:06:59,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552370990] [2025-03-16 14:06:59,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:06:59,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:07:00,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:07:00,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:07:00,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:07:00,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:07:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2025-03-16 14:07:00,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:07:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552370990] [2025-03-16 14:07:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552370990] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:07:00,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:07:00,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 14:07:00,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354694137] [2025-03-16 14:07:00,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:07:00,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 14:07:00,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:07:00,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 14:07:00,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:07:00,396 INFO L87 Difference]: Start difference. First operand 30870 states and 41967 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:00,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:07:00,756 INFO L93 Difference]: Finished difference Result 71583 states and 98235 transitions. [2025-03-16 14:07:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 14:07:00,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:07:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:07:00,792 INFO L225 Difference]: With dead ends: 71583 [2025-03-16 14:07:00,793 INFO L226 Difference]: Without dead ends: 41238 [2025-03-16 14:07:00,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:07:00,816 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 47 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 14:07:00,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1191 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 14:07:00,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41238 states. [2025-03-16 14:07:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41238 to 36822. [2025-03-16 14:07:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36822 states, 36740 states have (on average 1.357729994556342) internal successors, (49883), 36752 states have internal predecessors, (49883), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:07:01,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36822 states to 36822 states and 50031 transitions. [2025-03-16 14:07:01,136 INFO L78 Accepts]: Start accepts. Automaton has 36822 states and 50031 transitions. Word has length 471 [2025-03-16 14:07:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:07:01,136 INFO L471 AbstractCegarLoop]: Abstraction has 36822 states and 50031 transitions. [2025-03-16 14:07:01,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 36822 states and 50031 transitions. [2025-03-16 14:07:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:07:01,165 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:07:01,165 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:07:01,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-16 14:07:01,166 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:07:01,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:07:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash 400782070, now seen corresponding path program 1 times [2025-03-16 14:07:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:07:01,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832414154] [2025-03-16 14:07:01,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:07:01,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:07:01,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:07:01,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:07:01,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:07:01,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:07:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2025-03-16 14:07:01,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:07:01,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832414154] [2025-03-16 14:07:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832414154] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:07:01,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:07:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 14:07:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220959480] [2025-03-16 14:07:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:07:01,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:07:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:07:01,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:07:01,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:01,463 INFO L87 Difference]: Start difference. First operand 36822 states and 50031 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:01,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:07:01,680 INFO L93 Difference]: Finished difference Result 73695 states and 100155 transitions. [2025-03-16 14:07:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:07:01,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:07:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:07:01,719 INFO L225 Difference]: With dead ends: 73695 [2025-03-16 14:07:01,719 INFO L226 Difference]: Without dead ends: 37398 [2025-03-16 14:07:01,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:01,740 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:07:01,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1013 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:07:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37398 states. [2025-03-16 14:07:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37398 to 37206. [2025-03-16 14:07:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37206 states, 37124 states have (on average 1.3540297381747657) internal successors, (50267), 37136 states have internal predecessors, (50267), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:07:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37206 states to 37206 states and 50415 transitions. [2025-03-16 14:07:02,183 INFO L78 Accepts]: Start accepts. Automaton has 37206 states and 50415 transitions. Word has length 471 [2025-03-16 14:07:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:07:02,184 INFO L471 AbstractCegarLoop]: Abstraction has 37206 states and 50415 transitions. [2025-03-16 14:07:02,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 37206 states and 50415 transitions. [2025-03-16 14:07:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:07:02,227 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:07:02,227 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:07:02,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-03-16 14:07:02,227 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:07:02,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:07:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1557174355, now seen corresponding path program 1 times [2025-03-16 14:07:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:07:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641417540] [2025-03-16 14:07:02,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:07:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:07:02,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:07:02,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:07:02,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:07:02,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:07:02,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2025-03-16 14:07:02,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:07:02,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641417540] [2025-03-16 14:07:02,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641417540] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:07:02,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:07:02,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 14:07:02,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995368022] [2025-03-16 14:07:02,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:07:02,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 14:07:02,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:07:02,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 14:07:02,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:07:02,878 INFO L87 Difference]: Start difference. First operand 37206 states and 50415 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:03,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:07:03,217 INFO L93 Difference]: Finished difference Result 82911 states and 112827 transitions. [2025-03-16 14:07:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 14:07:03,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:07:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:07:03,267 INFO L225 Difference]: With dead ends: 82911 [2025-03-16 14:07:03,267 INFO L226 Difference]: Without dead ends: 46230 [2025-03-16 14:07:03,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:07:03,302 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 43 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:07:03,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1185 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 14:07:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46230 states. [2025-03-16 14:07:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46230 to 43158. [2025-03-16 14:07:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43158 states, 43076 states have (on average 1.3496842789488346) internal successors, (58139), 43088 states have internal predecessors, (58139), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:07:03,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43158 states to 43158 states and 58287 transitions. [2025-03-16 14:07:03,685 INFO L78 Accepts]: Start accepts. Automaton has 43158 states and 58287 transitions. Word has length 471 [2025-03-16 14:07:03,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:07:03,686 INFO L471 AbstractCegarLoop]: Abstraction has 43158 states and 58287 transitions. [2025-03-16 14:07:03,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:03,686 INFO L276 IsEmpty]: Start isEmpty. Operand 43158 states and 58287 transitions. [2025-03-16 14:07:03,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:07:03,719 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:07:03,719 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:07:03,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-16 14:07:03,719 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:07:03,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:07:03,720 INFO L85 PathProgramCache]: Analyzing trace with hash 413558865, now seen corresponding path program 1 times [2025-03-16 14:07:03,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:07:03,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267948546] [2025-03-16 14:07:03,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:07:03,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:07:03,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:07:03,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:07:03,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:07:03,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:07:04,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2025-03-16 14:07:04,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:07:04,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267948546] [2025-03-16 14:07:04,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267948546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:07:04,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:07:04,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 14:07:04,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309846455] [2025-03-16 14:07:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:07:04,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:07:04,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:07:04,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:07:04,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:04,067 INFO L87 Difference]: Start difference. First operand 43158 states and 58287 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:04,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:07:04,204 INFO L93 Difference]: Finished difference Result 86367 states and 116667 transitions. [2025-03-16 14:07:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:07:04,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:07:04,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:07:04,241 INFO L225 Difference]: With dead ends: 86367 [2025-03-16 14:07:04,242 INFO L226 Difference]: Without dead ends: 43734 [2025-03-16 14:07:04,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:04,278 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:07:04,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1013 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:07:04,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43734 states. [2025-03-16 14:07:04,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43734 to 43542. [2025-03-16 14:07:04,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43542 states, 43460 states have (on average 1.346594569719282) internal successors, (58523), 43472 states have internal predecessors, (58523), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:07:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43542 states to 43542 states and 58671 transitions. [2025-03-16 14:07:04,628 INFO L78 Accepts]: Start accepts. Automaton has 43542 states and 58671 transitions. Word has length 471 [2025-03-16 14:07:04,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:07:04,628 INFO L471 AbstractCegarLoop]: Abstraction has 43542 states and 58671 transitions. [2025-03-16 14:07:04,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 43542 states and 58671 transitions. [2025-03-16 14:07:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:07:04,664 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:07:04,664 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:07:04,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2025-03-16 14:07:04,664 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:07:04,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:07:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash -687071281, now seen corresponding path program 1 times [2025-03-16 14:07:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:07:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959792341] [2025-03-16 14:07:04,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:07:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:07:04,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:07:04,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:07:04,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:07:04,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:07:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2025-03-16 14:07:04,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:07:04,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959792341] [2025-03-16 14:07:04,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959792341] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:07:04,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:07:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 14:07:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443832828] [2025-03-16 14:07:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:07:04,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:07:04,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:07:04,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:07:04,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:04,965 INFO L87 Difference]: Start difference. First operand 43542 states and 58671 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:07:05,109 INFO L93 Difference]: Finished difference Result 87135 states and 117435 transitions. [2025-03-16 14:07:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:07:05,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:07:05,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:07:05,150 INFO L225 Difference]: With dead ends: 87135 [2025-03-16 14:07:05,150 INFO L226 Difference]: Without dead ends: 44118 [2025-03-16 14:07:05,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:05,184 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:07:05,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1013 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:07:05,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44118 states. [2025-03-16 14:07:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44118 to 43926. [2025-03-16 14:07:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43926 states, 43844 states have (on average 1.3435589818447222) internal successors, (58907), 43856 states have internal predecessors, (58907), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:07:05,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43926 states to 43926 states and 59055 transitions. [2025-03-16 14:07:05,627 INFO L78 Accepts]: Start accepts. Automaton has 43926 states and 59055 transitions. Word has length 471 [2025-03-16 14:07:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:07:05,628 INFO L471 AbstractCegarLoop]: Abstraction has 43926 states and 59055 transitions. [2025-03-16 14:07:05,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 43926 states and 59055 transitions. [2025-03-16 14:07:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:07:05,661 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:07:05,661 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:07:05,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-03-16 14:07:05,661 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:07:05,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:07:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 567647949, now seen corresponding path program 1 times [2025-03-16 14:07:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:07:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214213766] [2025-03-16 14:07:05,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:07:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:07:05,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:07:05,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:07:05,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:07:05,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:07:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2025-03-16 14:07:05,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:07:05,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214213766] [2025-03-16 14:07:05,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214213766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:07:05,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:07:05,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 14:07:05,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035853707] [2025-03-16 14:07:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:07:05,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:07:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:07:05,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:07:05,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:05,970 INFO L87 Difference]: Start difference. First operand 43926 states and 59055 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:07:06,113 INFO L93 Difference]: Finished difference Result 87711 states and 118011 transitions. [2025-03-16 14:07:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:07:06,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:07:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:07:06,154 INFO L225 Difference]: With dead ends: 87711 [2025-03-16 14:07:06,155 INFO L226 Difference]: Without dead ends: 44310 [2025-03-16 14:07:06,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:06,191 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:07:06,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1015 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:07:06,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44310 states. [2025-03-16 14:07:06,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44310 to 44310. [2025-03-16 14:07:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44310 states, 44228 states have (on average 1.3405761056344396) internal successors, (59291), 44240 states have internal predecessors, (59291), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:07:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44310 states to 44310 states and 59439 transitions. [2025-03-16 14:07:06,534 INFO L78 Accepts]: Start accepts. Automaton has 44310 states and 59439 transitions. Word has length 471 [2025-03-16 14:07:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:07:06,534 INFO L471 AbstractCegarLoop]: Abstraction has 44310 states and 59439 transitions. [2025-03-16 14:07:06,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 44310 states and 59439 transitions. [2025-03-16 14:07:06,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:07:06,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:07:06,571 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:07:06,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2025-03-16 14:07:06,571 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:07:06,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:07:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash -444776809, now seen corresponding path program 1 times [2025-03-16 14:07:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:07:06,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824592904] [2025-03-16 14:07:06,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:07:06,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:07:06,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:07:06,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:07:06,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:07:06,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:07:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2025-03-16 14:07:06,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:07:06,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824592904] [2025-03-16 14:07:06,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824592904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:07:06,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:07:06,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 14:07:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090206847] [2025-03-16 14:07:06,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:07:06,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:07:06,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:07:06,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:07:06,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:06,968 INFO L87 Difference]: Start difference. First operand 44310 states and 59439 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:07,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:07:07,115 INFO L93 Difference]: Finished difference Result 88863 states and 119355 transitions. [2025-03-16 14:07:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:07:07,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:07:07,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:07:07,163 INFO L225 Difference]: With dead ends: 88863 [2025-03-16 14:07:07,163 INFO L226 Difference]: Without dead ends: 45078 [2025-03-16 14:07:07,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:07:07,200 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:07:07,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1015 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:07:07,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45078 states. [2025-03-16 14:07:07,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45078 to 45078. [2025-03-16 14:07:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45078 states, 44996 states have (on average 1.3347630900524492) internal successors, (60059), 45008 states have internal predecessors, (60059), 74 states have call successors, (74), 7 states have call predecessors, (74), 7 states have return successors, (74), 65 states have call predecessors, (74), 74 states have call successors, (74) [2025-03-16 14:07:07,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45078 states to 45078 states and 60207 transitions. [2025-03-16 14:07:07,589 INFO L78 Accepts]: Start accepts. Automaton has 45078 states and 60207 transitions. Word has length 471 [2025-03-16 14:07:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:07:07,589 INFO L471 AbstractCegarLoop]: Abstraction has 45078 states and 60207 transitions. [2025-03-16 14:07:07,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:07,589 INFO L276 IsEmpty]: Start isEmpty. Operand 45078 states and 60207 transitions. [2025-03-16 14:07:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2025-03-16 14:07:07,626 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:07:07,626 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:07:07,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2025-03-16 14:07:07,627 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:07:07,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:07:07,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2010972259, now seen corresponding path program 1 times [2025-03-16 14:07:07,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:07:07,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244274268] [2025-03-16 14:07:07,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:07:07,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:07:07,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 471 statements into 1 equivalence classes. [2025-03-16 14:07:07,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 471 of 471 statements. [2025-03-16 14:07:07,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:07:07,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:07:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2025-03-16 14:07:08,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:07:08,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244274268] [2025-03-16 14:07:08,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244274268] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:07:08,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:07:08,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 14:07:08,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949033755] [2025-03-16 14:07:08,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:07:08,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 14:07:08,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:07:08,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 14:07:08,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:07:08,076 INFO L87 Difference]: Start difference. First operand 45078 states and 60207 transitions. Second operand has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2025-03-16 14:07:08,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:07:08,402 INFO L93 Difference]: Finished difference Result 96159 states and 127995 transitions. [2025-03-16 14:07:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 14:07:08,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.4) internal successors, (217), 5 states have internal predecessors, (217), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 471 [2025-03-16 14:07:08,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:07:08,457 INFO L225 Difference]: With dead ends: 96159 [2025-03-16 14:07:08,457 INFO L226 Difference]: Without dead ends: 51606 [2025-03-16 14:07:08,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-16 14:07:08,496 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 29 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 14:07:08,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1198 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 14:07:08,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51606 states. [2025-03-16 14:07:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51606 to 50262.