./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:29:41,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:29:41,090 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 21:29:41,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:29:41,094 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:29:41,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:29:41,111 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:29:41,112 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:29:41,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 21:29:41,112 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 21:29:41,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:29:41,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:29:41,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:29:41,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:29:41,112 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:29:41,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:29:41,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:29:41,114 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:29:41,114 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:29:41,114 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:29:41,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:29:41,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 21:29:41,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:29:41,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:29:41,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:29:41,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:29:41,114 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:29:41,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:29:41,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:29:41,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:29:41,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:29:41,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:29:41,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:29:41,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:29:41,115 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 -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2025-03-08 21:29:41,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:29:41,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:29:41,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:29:41,346 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:29:41,346 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:29:41,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2025-03-08 21:29:42,465 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77abe1bfd/f447a8c66cce46e3a3bc3ada3914d99a/FLAG6099f9ab5 [2025-03-08 21:29:42,784 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:29:42,784 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2025-03-08 21:29:42,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77abe1bfd/f447a8c66cce46e3a3bc3ada3914d99a/FLAG6099f9ab5 [2025-03-08 21:29:42,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77abe1bfd/f447a8c66cce46e3a3bc3ada3914d99a [2025-03-08 21:29:42,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:29:42,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:29:42,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:29:42,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:29:42,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:29:42,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:29:42" (1/1) ... [2025-03-08 21:29:42,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40eb77c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:42, skipping insertion in model container [2025-03-08 21:29:42,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:29:42" (1/1) ... [2025-03-08 21:29:42,863 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:29:43,071 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i[33519,33532] [2025-03-08 21:29:43,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:29:43,171 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:29:43,197 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i[33519,33532] [2025-03-08 21:29:43,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:29:43,274 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:29:43,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43 WrapperNode [2025-03-08 21:29:43,274 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:29:43,275 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:29:43,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:29:43,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:29:43,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,346 INFO L138 Inliner]: procedures = 177, calls = 324, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1545 [2025-03-08 21:29:43,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:29:43,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:29:43,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:29:43,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:29:43,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,366 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,437 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 266, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2025-03-08 21:29:43,440 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,481 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:29:43,497 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:29:43,497 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:29:43,497 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:29:43,498 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (1/1) ... [2025-03-08 21:29:43,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:29:43,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:29:43,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 21:29:43,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 21:29:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-08 21:29:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-08 21:29:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-08 21:29:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:29:43,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 21:29:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:29:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:29:43,696 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:29:43,698 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:29:44,760 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-08 21:29:44,831 INFO L? ?]: Removed 335 outVars from TransFormulas that were not future-live. [2025-03-08 21:29:44,831 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:29:44,876 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:29:44,877 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-08 21:29:44,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:29:44 BoogieIcfgContainer [2025-03-08 21:29:44,878 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:29:44,880 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:29:44,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:29:44,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:29:44,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:29:42" (1/3) ... [2025-03-08 21:29:44,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407dde50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:29:44, skipping insertion in model container [2025-03-08 21:29:44,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:29:43" (2/3) ... [2025-03-08 21:29:44,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407dde50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:29:44, skipping insertion in model container [2025-03-08 21:29:44,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:29:44" (3/3) ... [2025-03-08 21:29:44,885 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test3-2.i [2025-03-08 21:29:44,896 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:29:44,898 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_nondet_test3-2.i that has 5 procedures, 436 locations, 1 initial locations, 41 loop locations, and 1 error locations. [2025-03-08 21:29:44,947 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:29:44,954 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;@f56a571, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:29:44,954 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 21:29:44,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 428 states, 419 states have (on average 1.6205250596658711) internal successors, (679), 421 states have internal predecessors, (679), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 21:29:44,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 21:29:44,962 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:44,963 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:44,963 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:44,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:44,966 INFO L85 PathProgramCache]: Analyzing trace with hash -990451146, now seen corresponding path program 1 times [2025-03-08 21:29:44,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:44,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703409903] [2025-03-08 21:29:44,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:44,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:45,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 21:29:45,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 21:29:45,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:45,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:29:45,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:45,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703409903] [2025-03-08 21:29:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703409903] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:45,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:45,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:29:45,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193479747] [2025-03-08 21:29:45,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:45,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 21:29:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:45,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 21:29:45,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 21:29:45,125 INFO L87 Difference]: Start difference. First operand has 428 states, 419 states have (on average 1.6205250596658711) internal successors, (679), 421 states have internal predecessors, (679), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:45,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:45,252 INFO L93 Difference]: Finished difference Result 853 states and 1376 transitions. [2025-03-08 21:29:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 21:29:45,253 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-08 21:29:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:45,261 INFO L225 Difference]: With dead ends: 853 [2025-03-08 21:29:45,262 INFO L226 Difference]: Without dead ends: 392 [2025-03-08 21:29:45,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 21:29:45,270 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:45,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:29:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2025-03-08 21:29:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2025-03-08 21:29:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 384 states have (on average 1.453125) internal successors, (558), 385 states have internal predecessors, (558), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-08 21:29:45,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 568 transitions. [2025-03-08 21:29:45,320 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 568 transitions. Word has length 12 [2025-03-08 21:29:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:45,321 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 568 transitions. [2025-03-08 21:29:45,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 568 transitions. [2025-03-08 21:29:45,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 21:29:45,321 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:45,321 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:45,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:29:45,321 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:45,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:45,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1427560937, now seen corresponding path program 1 times [2025-03-08 21:29:45,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:45,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863391374] [2025-03-08 21:29:45,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:45,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 21:29:45,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 21:29:45,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:45,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:29:45,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:45,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863391374] [2025-03-08 21:29:45,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863391374] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:45,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:45,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:29:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358907578] [2025-03-08 21:29:45,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:45,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:29:45,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:45,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:29:45,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:29:45,471 INFO L87 Difference]: Start difference. First operand 392 states and 568 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:45,851 INFO L93 Difference]: Finished difference Result 1073 states and 1573 transitions. [2025-03-08 21:29:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:29:45,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-08 21:29:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:45,854 INFO L225 Difference]: With dead ends: 1073 [2025-03-08 21:29:45,854 INFO L226 Difference]: Without dead ends: 682 [2025-03-08 21:29:45,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:29:45,856 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 427 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:45,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1498 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:29:45,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2025-03-08 21:29:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 681. [2025-03-08 21:29:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 672 states have (on average 1.4732142857142858) internal successors, (990), 674 states have internal predecessors, (990), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 21:29:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1002 transitions. [2025-03-08 21:29:45,892 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1002 transitions. Word has length 14 [2025-03-08 21:29:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:45,893 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1002 transitions. [2025-03-08 21:29:45,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:45,893 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1002 transitions. [2025-03-08 21:29:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:29:45,894 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:45,895 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:45,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:29:45,895 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:45,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1131626693, now seen corresponding path program 1 times [2025-03-08 21:29:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:45,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141850771] [2025-03-08 21:29:45,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:45,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:29:45,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:29:45,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:45,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:29:46,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141850771] [2025-03-08 21:29:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141850771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:46,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:29:46,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035994062] [2025-03-08 21:29:46,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:46,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:29:46,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:46,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:29:46,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:29:46,098 INFO L87 Difference]: Start difference. First operand 681 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:46,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:46,235 INFO L93 Difference]: Finished difference Result 948 states and 1387 transitions. [2025-03-08 21:29:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 21:29:46,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-08 21:29:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:46,240 INFO L225 Difference]: With dead ends: 948 [2025-03-08 21:29:46,240 INFO L226 Difference]: Without dead ends: 597 [2025-03-08 21:29:46,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:29:46,241 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 33 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:46,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1280 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:29:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2025-03-08 21:29:46,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2025-03-08 21:29:46,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 588 states have (on average 1.4217687074829932) internal successors, (836), 590 states have internal predecessors, (836), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 21:29:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 848 transitions. [2025-03-08 21:29:46,276 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 848 transitions. Word has length 66 [2025-03-08 21:29:46,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:46,277 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 848 transitions. [2025-03-08 21:29:46,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:46,277 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 848 transitions. [2025-03-08 21:29:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:29:46,280 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:46,280 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:46,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 21:29:46,280 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:46,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:46,281 INFO L85 PathProgramCache]: Analyzing trace with hash 638412932, now seen corresponding path program 1 times [2025-03-08 21:29:46,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:46,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011016829] [2025-03-08 21:29:46,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:46,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:46,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:29:46,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:29:46,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:46,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:29:46,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:46,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011016829] [2025-03-08 21:29:46,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011016829] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:46,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:46,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:29:46,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390735884] [2025-03-08 21:29:46,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:46,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:29:46,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:46,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:29:46,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:29:46,387 INFO L87 Difference]: Start difference. First operand 597 states and 848 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:46,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:46,480 INFO L93 Difference]: Finished difference Result 864 states and 1211 transitions. [2025-03-08 21:29:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:29:46,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-08 21:29:46,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:46,483 INFO L225 Difference]: With dead ends: 864 [2025-03-08 21:29:46,485 INFO L226 Difference]: Without dead ends: 597 [2025-03-08 21:29:46,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:29:46,486 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 2 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:46,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 870 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:29:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2025-03-08 21:29:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2025-03-08 21:29:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 588 states have (on average 1.41156462585034) internal successors, (830), 590 states have internal predecessors, (830), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 21:29:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 842 transitions. [2025-03-08 21:29:46,500 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 842 transitions. Word has length 66 [2025-03-08 21:29:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:46,500 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 842 transitions. [2025-03-08 21:29:46,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:46,500 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 842 transitions. [2025-03-08 21:29:46,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:29:46,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:46,502 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:46,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 21:29:46,502 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:46,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:46,502 INFO L85 PathProgramCache]: Analyzing trace with hash -494150143, now seen corresponding path program 1 times [2025-03-08 21:29:46,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:46,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120039843] [2025-03-08 21:29:46,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:46,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:46,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:29:46,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:29:46,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:46,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:29:46,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:46,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120039843] [2025-03-08 21:29:46,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120039843] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:46,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:46,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:29:46,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679310203] [2025-03-08 21:29:46,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:46,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:29:46,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:46,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:29:46,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:29:46,910 INFO L87 Difference]: Start difference. First operand 597 states and 842 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:47,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:47,183 INFO L93 Difference]: Finished difference Result 1103 states and 1521 transitions. [2025-03-08 21:29:47,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:29:47,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-08 21:29:47,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:47,186 INFO L225 Difference]: With dead ends: 1103 [2025-03-08 21:29:47,186 INFO L226 Difference]: Without dead ends: 833 [2025-03-08 21:29:47,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:29:47,187 INFO L435 NwaCegarLoop]: 440 mSDtfsCounter, 457 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:47,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 2612 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:29:47,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2025-03-08 21:29:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 596. [2025-03-08 21:29:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 587 states have (on average 1.4105621805792163) internal successors, (828), 589 states have internal predecessors, (828), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 21:29:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 840 transitions. [2025-03-08 21:29:47,219 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 840 transitions. Word has length 66 [2025-03-08 21:29:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:47,220 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 840 transitions. [2025-03-08 21:29:47,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:29:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 840 transitions. [2025-03-08 21:29:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-08 21:29:47,224 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:47,224 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 21:29:47,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 21:29:47,224 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:47,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash -856146600, now seen corresponding path program 1 times [2025-03-08 21:29:47,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:47,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084735668] [2025-03-08 21:29:47,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:47,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:47,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-08 21:29:47,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 21:29:47,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:47,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:29:47,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:47,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084735668] [2025-03-08 21:29:47,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084735668] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:47,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:47,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:29:47,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529739417] [2025-03-08 21:29:47,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:47,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:29:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:47,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:29:47,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:29:47,429 INFO L87 Difference]: Start difference. First operand 596 states and 840 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:47,535 INFO L93 Difference]: Finished difference Result 1139 states and 1598 transitions. [2025-03-08 21:29:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:29:47,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2025-03-08 21:29:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:47,538 INFO L225 Difference]: With dead ends: 1139 [2025-03-08 21:29:47,538 INFO L226 Difference]: Without dead ends: 602 [2025-03-08 21:29:47,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:29:47,539 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 105 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:47,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1191 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:29:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2025-03-08 21:29:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 596. [2025-03-08 21:29:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 587 states have (on average 1.3867120954003407) internal successors, (814), 589 states have internal predecessors, (814), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 21:29:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 826 transitions. [2025-03-08 21:29:47,551 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 826 transitions. Word has length 103 [2025-03-08 21:29:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:47,551 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 826 transitions. [2025-03-08 21:29:47,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 826 transitions. [2025-03-08 21:29:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-08 21:29:47,552 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:47,552 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 21:29:47,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 21:29:47,552 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:47,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:47,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1242828126, now seen corresponding path program 1 times [2025-03-08 21:29:47,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:47,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562260036] [2025-03-08 21:29:47,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:47,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:47,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-08 21:29:47,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 21:29:47,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:47,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:29:47,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:47,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562260036] [2025-03-08 21:29:47,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562260036] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:29:47,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782845113] [2025-03-08 21:29:47,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:47,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:29:47,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:29:47,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 21:29:47,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 21:29:48,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-08 21:29:48,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 21:29:48,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:48,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:48,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-08 21:29:48,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:29:48,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 21:29:48,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2025-03-08 21:29:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:29:48,954 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:29:48,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782845113] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:48,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:29:48,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2025-03-08 21:29:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585735644] [2025-03-08 21:29:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:48,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 21:29:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:48,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 21:29:48,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-03-08 21:29:48,955 INFO L87 Difference]: Start difference. First operand 596 states and 826 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:50,250 INFO L93 Difference]: Finished difference Result 1392 states and 1914 transitions. [2025-03-08 21:29:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 21:29:50,250 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2025-03-08 21:29:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:50,253 INFO L225 Difference]: With dead ends: 1392 [2025-03-08 21:29:50,253 INFO L226 Difference]: Without dead ends: 881 [2025-03-08 21:29:50,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2025-03-08 21:29:50,255 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 728 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:50,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 2324 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 21:29:50,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2025-03-08 21:29:50,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 621. [2025-03-08 21:29:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 612 states have (on average 1.3790849673202614) internal successors, (844), 614 states have internal predecessors, (844), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 21:29:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 856 transitions. [2025-03-08 21:29:50,273 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 856 transitions. Word has length 103 [2025-03-08 21:29:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:50,274 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 856 transitions. [2025-03-08 21:29:50,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 856 transitions. [2025-03-08 21:29:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 21:29:50,275 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:50,275 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 21:29:50,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 21:29:50,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:29:50,479 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:50,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:50,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1813771679, now seen corresponding path program 1 times [2025-03-08 21:29:50,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:50,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874026870] [2025-03-08 21:29:50,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:50,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:50,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 21:29:50,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 21:29:50,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:50,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:29:50,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:50,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874026870] [2025-03-08 21:29:50,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874026870] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:29:50,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705692616] [2025-03-08 21:29:50,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:50,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:29:50,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:29:50,767 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 21:29:50,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 21:29:50,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 21:29:51,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 21:29:51,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:51,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:51,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 21:29:51,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:29:51,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 21:29:51,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-08 21:29:51,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 21:29:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:29:51,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 21:29:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:29:51,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705692616] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 21:29:51,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 21:29:51,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 11 [2025-03-08 21:29:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169699337] [2025-03-08 21:29:51,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:51,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 21:29:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:51,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 21:29:51,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-08 21:29:51,504 INFO L87 Difference]: Start difference. First operand 621 states and 856 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:51,677 INFO L93 Difference]: Finished difference Result 803 states and 1100 transitions. [2025-03-08 21:29:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 21:29:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2025-03-08 21:29:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:51,682 INFO L225 Difference]: With dead ends: 803 [2025-03-08 21:29:51,682 INFO L226 Difference]: Without dead ends: 793 [2025-03-08 21:29:51,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:29:51,683 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 554 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:51,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1288 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:29:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2025-03-08 21:29:51,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 623. [2025-03-08 21:29:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 614 states have (on average 1.3778501628664495) internal successors, (846), 616 states have internal predecessors, (846), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 21:29:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 858 transitions. [2025-03-08 21:29:51,698 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 858 transitions. Word has length 104 [2025-03-08 21:29:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:51,698 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 858 transitions. [2025-03-08 21:29:51,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 858 transitions. [2025-03-08 21:29:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-08 21:29:51,700 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:51,700 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:51,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 21:29:51,900 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,SelfDestructingSolverStorable7 [2025-03-08 21:29:51,900 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:51,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:51,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1987859785, now seen corresponding path program 1 times [2025-03-08 21:29:51,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:51,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743768245] [2025-03-08 21:29:51,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:51,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:51,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-08 21:29:51,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-08 21:29:51,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:51,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:29:52,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:52,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743768245] [2025-03-08 21:29:52,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743768245] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:52,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:52,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:29:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60675641] [2025-03-08 21:29:52,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:52,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:29:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:52,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:29:52,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:29:52,055 INFO L87 Difference]: Start difference. First operand 623 states and 858 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:52,314 INFO L93 Difference]: Finished difference Result 1235 states and 1693 transitions. [2025-03-08 21:29:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 21:29:52,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2025-03-08 21:29:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:52,318 INFO L225 Difference]: With dead ends: 1235 [2025-03-08 21:29:52,318 INFO L226 Difference]: Without dead ends: 769 [2025-03-08 21:29:52,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:29:52,320 INFO L435 NwaCegarLoop]: 565 mSDtfsCounter, 948 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:52,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 932 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:29:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2025-03-08 21:29:52,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 761. [2025-03-08 21:29:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 751 states have (on average 1.3715046604527297) internal successors, (1030), 754 states have internal predecessors, (1030), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:29:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1044 transitions. [2025-03-08 21:29:52,339 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1044 transitions. Word has length 156 [2025-03-08 21:29:52,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:52,340 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1044 transitions. [2025-03-08 21:29:52,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1044 transitions. [2025-03-08 21:29:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-08 21:29:52,346 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:52,346 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:52,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 21:29:52,346 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:52,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:52,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1478680517, now seen corresponding path program 1 times [2025-03-08 21:29:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:52,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694292807] [2025-03-08 21:29:52,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:52,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:52,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 21:29:52,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 21:29:52,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:52,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:29:52,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:52,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694292807] [2025-03-08 21:29:52,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694292807] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:29:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333746018] [2025-03-08 21:29:52,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:52,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:29:52,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:29:52,663 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) [2025-03-08 21:29:52,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 21:29:52,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 21:29:52,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 21:29:52,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:52,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:52,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-08 21:29:52,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:29:52,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 21:29:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 21:29:53,493 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:29:53,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333746018] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:53,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:29:53,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2025-03-08 21:29:53,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882468443] [2025-03-08 21:29:53,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:53,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:29:53,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:53,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:29:53,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:29:53,494 INFO L87 Difference]: Start difference. First operand 761 states and 1044 transitions. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:54,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:54,303 INFO L93 Difference]: Finished difference Result 1383 states and 1877 transitions. [2025-03-08 21:29:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:29:54,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2025-03-08 21:29:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:54,307 INFO L225 Difference]: With dead ends: 1383 [2025-03-08 21:29:54,307 INFO L226 Difference]: Without dead ends: 978 [2025-03-08 21:29:54,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-03-08 21:29:54,308 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 458 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:54,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 2902 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 21:29:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2025-03-08 21:29:54,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 794. [2025-03-08 21:29:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 784 states have (on average 1.3571428571428572) internal successors, (1064), 787 states have internal predecessors, (1064), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:29:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1078 transitions. [2025-03-08 21:29:54,328 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1078 transitions. Word has length 166 [2025-03-08 21:29:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:54,328 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1078 transitions. [2025-03-08 21:29:54,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1078 transitions. [2025-03-08 21:29:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 21:29:54,330 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:54,330 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:54,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 21:29:54,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:29:54,534 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:54,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:54,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1289111245, now seen corresponding path program 1 times [2025-03-08 21:29:54,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:54,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908571404] [2025-03-08 21:29:54,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:54,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 21:29:54,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 21:29:54,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:54,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:54,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:29:54,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:54,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908571404] [2025-03-08 21:29:54,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908571404] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:29:54,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113426276] [2025-03-08 21:29:54,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:54,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:29:54,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:29:54,863 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) [2025-03-08 21:29:54,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 21:29:55,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 21:29:55,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 21:29:55,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:55,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:55,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 21:29:55,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:29:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:29:55,351 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:29:55,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113426276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:55,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:29:55,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 21:29:55,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266234390] [2025-03-08 21:29:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:55,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:29:55,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:55,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:29:55,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:29:55,352 INFO L87 Difference]: Start difference. First operand 794 states and 1078 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:55,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:55,557 INFO L93 Difference]: Finished difference Result 1521 states and 2065 transitions. [2025-03-08 21:29:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:29:55,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2025-03-08 21:29:55,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:55,560 INFO L225 Difference]: With dead ends: 1521 [2025-03-08 21:29:55,560 INFO L226 Difference]: Without dead ends: 837 [2025-03-08 21:29:55,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:29:55,562 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 17 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:55,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1145 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:29:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2025-03-08 21:29:55,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 821. [2025-03-08 21:29:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 811 states have (on average 1.3526510480887792) internal successors, (1097), 814 states have internal predecessors, (1097), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:29:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1111 transitions. [2025-03-08 21:29:55,580 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1111 transitions. Word has length 167 [2025-03-08 21:29:55,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:55,580 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1111 transitions. [2025-03-08 21:29:55,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1111 transitions. [2025-03-08 21:29:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-08 21:29:55,581 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:55,581 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:55,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 21:29:55,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:29:55,782 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:55,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:55,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1685642577, now seen corresponding path program 1 times [2025-03-08 21:29:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:55,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581185520] [2025-03-08 21:29:55,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:55,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:55,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 21:29:55,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 21:29:55,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:55,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:56,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:29:56,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:56,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581185520] [2025-03-08 21:29:56,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581185520] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:56,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:56,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 21:29:56,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949234819] [2025-03-08 21:29:56,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:56,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:29:56,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:56,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:29:56,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:29:56,046 INFO L87 Difference]: Start difference. First operand 821 states and 1111 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:56,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:56,397 INFO L93 Difference]: Finished difference Result 1540 states and 2084 transitions. [2025-03-08 21:29:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:29:56,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2025-03-08 21:29:56,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:56,401 INFO L225 Difference]: With dead ends: 1540 [2025-03-08 21:29:56,401 INFO L226 Difference]: Without dead ends: 833 [2025-03-08 21:29:56,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:29:56,402 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 8 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:56,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1418 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:29:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2025-03-08 21:29:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 829. [2025-03-08 21:29:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 819 states have (on average 1.3516483516483517) internal successors, (1107), 822 states have internal predecessors, (1107), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:29:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1121 transitions. [2025-03-08 21:29:56,420 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1121 transitions. Word has length 168 [2025-03-08 21:29:56,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:56,420 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1121 transitions. [2025-03-08 21:29:56,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1121 transitions. [2025-03-08 21:29:56,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-08 21:29:56,422 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:56,422 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:56,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 21:29:56,422 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:56,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:56,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2027283729, now seen corresponding path program 1 times [2025-03-08 21:29:56,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:56,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765652184] [2025-03-08 21:29:56,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:56,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:56,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 21:29:56,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 21:29:56,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:56,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:29:56,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:56,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765652184] [2025-03-08 21:29:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765652184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:56,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:56,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:29:56,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645272490] [2025-03-08 21:29:56,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:56,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:29:56,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:56,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:29:56,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:29:56,663 INFO L87 Difference]: Start difference. First operand 829 states and 1121 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:57,164 INFO L93 Difference]: Finished difference Result 1555 states and 2104 transitions. [2025-03-08 21:29:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:29:57,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2025-03-08 21:29:57,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:57,167 INFO L225 Difference]: With dead ends: 1555 [2025-03-08 21:29:57,168 INFO L226 Difference]: Without dead ends: 851 [2025-03-08 21:29:57,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:29:57,169 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 12 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:57,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2021 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:29:57,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2025-03-08 21:29:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 845. [2025-03-08 21:29:57,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 835 states have (on average 1.3520958083832335) internal successors, (1129), 838 states have internal predecessors, (1129), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:29:57,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1143 transitions. [2025-03-08 21:29:57,190 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1143 transitions. Word has length 169 [2025-03-08 21:29:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:57,190 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1143 transitions. [2025-03-08 21:29:57,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1143 transitions. [2025-03-08 21:29:57,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-08 21:29:57,191 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:57,192 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:57,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 21:29:57,192 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:57,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:57,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1062898883, now seen corresponding path program 1 times [2025-03-08 21:29:57,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:57,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648485760] [2025-03-08 21:29:57,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:57,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 21:29:57,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 21:29:57,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:57,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:29:57,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:57,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648485760] [2025-03-08 21:29:57,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648485760] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:29:57,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974501719] [2025-03-08 21:29:57,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:57,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:29:57,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:29:57,477 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) [2025-03-08 21:29:57,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 21:29:57,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 21:29:57,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 21:29:57,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:57,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:57,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 21:29:57,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:29:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 21:29:57,869 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:29:57,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974501719] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:57,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:29:57,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2025-03-08 21:29:57,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984223789] [2025-03-08 21:29:57,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:57,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:29:57,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:57,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:29:57,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 21:29:57,870 INFO L87 Difference]: Start difference. First operand 845 states and 1143 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:58,188 INFO L93 Difference]: Finished difference Result 1256 states and 1695 transitions. [2025-03-08 21:29:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:29:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2025-03-08 21:29:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:58,192 INFO L225 Difference]: With dead ends: 1256 [2025-03-08 21:29:58,192 INFO L226 Difference]: Without dead ends: 851 [2025-03-08 21:29:58,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 21:29:58,193 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 34 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:58,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1859 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:29:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2025-03-08 21:29:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 845. [2025-03-08 21:29:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 835 states have (on average 1.3485029940119762) internal successors, (1126), 838 states have internal predecessors, (1126), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:29:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1140 transitions. [2025-03-08 21:29:58,213 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1140 transitions. Word has length 169 [2025-03-08 21:29:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:58,214 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1140 transitions. [2025-03-08 21:29:58,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1140 transitions. [2025-03-08 21:29:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-08 21:29:58,215 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:58,215 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:58,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 21:29:58,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-08 21:29:58,416 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:58,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:58,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1988718292, now seen corresponding path program 1 times [2025-03-08 21:29:58,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:58,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326920705] [2025-03-08 21:29:58,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:58,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:58,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-08 21:29:58,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-08 21:29:58,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:58,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 21:29:58,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:58,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326920705] [2025-03-08 21:29:58,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326920705] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:58,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:58,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 21:29:58,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894100404] [2025-03-08 21:29:58,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:58,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:29:58,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:58,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:29:58,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:29:58,671 INFO L87 Difference]: Start difference. First operand 845 states and 1140 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:58,876 INFO L93 Difference]: Finished difference Result 1259 states and 1696 transitions. [2025-03-08 21:29:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:29:58,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2025-03-08 21:29:58,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:58,879 INFO L225 Difference]: With dead ends: 1259 [2025-03-08 21:29:58,879 INFO L226 Difference]: Without dead ends: 854 [2025-03-08 21:29:58,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:29:58,880 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 8 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:58,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1566 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:29:58,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2025-03-08 21:29:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2025-03-08 21:29:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 844 states have (on average 1.34478672985782) internal successors, (1135), 847 states have internal predecessors, (1135), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:29:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1149 transitions. [2025-03-08 21:29:58,898 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1149 transitions. Word has length 170 [2025-03-08 21:29:58,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:58,898 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1149 transitions. [2025-03-08 21:29:58,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1149 transitions. [2025-03-08 21:29:58,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-08 21:29:58,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:58,900 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:58,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 21:29:58,900 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:58,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1126033761, now seen corresponding path program 1 times [2025-03-08 21:29:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:58,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735503030] [2025-03-08 21:29:58,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:58,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:58,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-08 21:29:58,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-08 21:29:58,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:58,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 21:29:59,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:59,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735503030] [2025-03-08 21:29:59,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735503030] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:29:59,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:29:59,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:29:59,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712657224] [2025-03-08 21:29:59,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:29:59,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:29:59,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:29:59,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:29:59,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:29:59,120 INFO L87 Difference]: Start difference. First operand 854 states and 1149 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:59,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:29:59,426 INFO L93 Difference]: Finished difference Result 1283 states and 1723 transitions. [2025-03-08 21:29:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:29:59,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2025-03-08 21:29:59,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:29:59,429 INFO L225 Difference]: With dead ends: 1283 [2025-03-08 21:29:59,429 INFO L226 Difference]: Without dead ends: 869 [2025-03-08 21:29:59,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:29:59,431 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 12 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:29:59,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2276 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:29:59,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2025-03-08 21:29:59,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 866. [2025-03-08 21:29:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 856 states have (on average 1.3434579439252337) internal successors, (1150), 859 states have internal predecessors, (1150), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:29:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1164 transitions. [2025-03-08 21:29:59,451 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1164 transitions. Word has length 171 [2025-03-08 21:29:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:29:59,451 INFO L471 AbstractCegarLoop]: Abstraction has 866 states and 1164 transitions. [2025-03-08 21:29:59,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:29:59,452 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1164 transitions. [2025-03-08 21:29:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-08 21:29:59,453 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:29:59,453 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:29:59,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 21:29:59,453 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:29:59,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:29:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash -488231692, now seen corresponding path program 1 times [2025-03-08 21:29:59,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:29:59,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417472630] [2025-03-08 21:29:59,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:59,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:29:59,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-08 21:29:59,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-08 21:29:59,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:29:59,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:29:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:29:59,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:29:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417472630] [2025-03-08 21:29:59,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417472630] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:29:59,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566143533] [2025-03-08 21:29:59,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:29:59,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:29:59,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:29:59,703 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) [2025-03-08 21:29:59,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 21:29:59,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-08 21:30:00,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-08 21:30:00,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:00,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:00,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 21:30:00,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:30:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 21:30:00,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:30:00,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566143533] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:00,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:30:00,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 21:30:00,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451481736] [2025-03-08 21:30:00,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:00,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:30:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:00,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:30:00,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:00,288 INFO L87 Difference]: Start difference. First operand 866 states and 1164 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:00,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:00,661 INFO L93 Difference]: Finished difference Result 1307 states and 1753 transitions. [2025-03-08 21:30:00,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:30:00,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2025-03-08 21:30:00,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:00,664 INFO L225 Difference]: With dead ends: 1307 [2025-03-08 21:30:00,664 INFO L226 Difference]: Without dead ends: 881 [2025-03-08 21:30:00,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:00,665 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 12 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:00,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2282 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:30:00,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2025-03-08 21:30:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 866. [2025-03-08 21:30:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 856 states have (on average 1.3434579439252337) internal successors, (1150), 859 states have internal predecessors, (1150), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:30:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1164 transitions. [2025-03-08 21:30:00,687 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1164 transitions. Word has length 171 [2025-03-08 21:30:00,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:00,688 INFO L471 AbstractCegarLoop]: Abstraction has 866 states and 1164 transitions. [2025-03-08 21:30:00,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1164 transitions. [2025-03-08 21:30:00,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-08 21:30:00,691 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:00,691 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:00,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 21:30:00,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-08 21:30:00,892 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:00,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:00,892 INFO L85 PathProgramCache]: Analyzing trace with hash 144430629, now seen corresponding path program 1 times [2025-03-08 21:30:00,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:00,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690358038] [2025-03-08 21:30:00,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:00,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:00,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 21:30:00,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 21:30:00,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:00,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 21:30:01,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:01,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690358038] [2025-03-08 21:30:01,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690358038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:01,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:30:01,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:30:01,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128430240] [2025-03-08 21:30:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:01,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:30:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:01,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:30:01,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:01,153 INFO L87 Difference]: Start difference. First operand 866 states and 1164 transitions. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:01,433 INFO L93 Difference]: Finished difference Result 1322 states and 1771 transitions. [2025-03-08 21:30:01,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 21:30:01,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2025-03-08 21:30:01,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:01,435 INFO L225 Difference]: With dead ends: 1322 [2025-03-08 21:30:01,435 INFO L226 Difference]: Without dead ends: 896 [2025-03-08 21:30:01,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:01,436 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 20 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:01,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2371 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:30:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2025-03-08 21:30:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 887. [2025-03-08 21:30:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 877 states have (on average 1.3420752565564424) internal successors, (1177), 880 states have internal predecessors, (1177), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:30:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1191 transitions. [2025-03-08 21:30:01,452 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1191 transitions. Word has length 172 [2025-03-08 21:30:01,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:01,453 INFO L471 AbstractCegarLoop]: Abstraction has 887 states and 1191 transitions. [2025-03-08 21:30:01,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1191 transitions. [2025-03-08 21:30:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-08 21:30:01,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:01,454 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:01,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 21:30:01,454 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:01,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:01,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1558541712, now seen corresponding path program 1 times [2025-03-08 21:30:01,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:01,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842685968] [2025-03-08 21:30:01,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:01,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:01,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 21:30:01,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 21:30:01,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:01,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:30:01,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:01,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842685968] [2025-03-08 21:30:01,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842685968] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:30:01,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674031497] [2025-03-08 21:30:01,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:01,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:30:01,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:30:01,646 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) [2025-03-08 21:30:01,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 21:30:01,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 21:30:02,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 21:30:02,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:02,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:02,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 773 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 21:30:02,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:30:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 21:30:02,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:30:02,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674031497] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:02,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:30:02,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 21:30:02,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940659316] [2025-03-08 21:30:02,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:02,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:30:02,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:02,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:30:02,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:02,179 INFO L87 Difference]: Start difference. First operand 887 states and 1191 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:02,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:02,457 INFO L93 Difference]: Finished difference Result 1357 states and 1815 transitions. [2025-03-08 21:30:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 21:30:02,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2025-03-08 21:30:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:02,460 INFO L225 Difference]: With dead ends: 1357 [2025-03-08 21:30:02,460 INFO L226 Difference]: Without dead ends: 910 [2025-03-08 21:30:02,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-08 21:30:02,461 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 40 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:02,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2288 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:30:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2025-03-08 21:30:02,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 893. [2025-03-08 21:30:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 883 states have (on average 1.3397508493771235) internal successors, (1183), 886 states have internal predecessors, (1183), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:30:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1197 transitions. [2025-03-08 21:30:02,477 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1197 transitions. Word has length 172 [2025-03-08 21:30:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:02,477 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1197 transitions. [2025-03-08 21:30:02,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1197 transitions. [2025-03-08 21:30:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 21:30:02,478 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:02,479 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:02,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 21:30:02,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:30:02,680 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:02,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1392865336, now seen corresponding path program 1 times [2025-03-08 21:30:02,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:02,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965839569] [2025-03-08 21:30:02,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:02,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:02,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 21:30:02,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 21:30:02,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:02,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-08 21:30:03,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:03,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965839569] [2025-03-08 21:30:03,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965839569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:03,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:30:03,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:30:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343996567] [2025-03-08 21:30:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:03,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:30:03,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:03,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:30:03,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:30:03,005 INFO L87 Difference]: Start difference. First operand 893 states and 1197 transitions. Second operand has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:03,352 INFO L93 Difference]: Finished difference Result 1373 states and 1837 transitions. [2025-03-08 21:30:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:30:03,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2025-03-08 21:30:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:03,355 INFO L225 Difference]: With dead ends: 1373 [2025-03-08 21:30:03,355 INFO L226 Difference]: Without dead ends: 920 [2025-03-08 21:30:03,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:30:03,357 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 26 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:03,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2721 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:30:03,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2025-03-08 21:30:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 902. [2025-03-08 21:30:03,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 892 states have (on average 1.336322869955157) internal successors, (1192), 895 states have internal predecessors, (1192), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:30:03,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1206 transitions. [2025-03-08 21:30:03,386 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1206 transitions. Word has length 173 [2025-03-08 21:30:03,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:03,386 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1206 transitions. [2025-03-08 21:30:03,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:03,386 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1206 transitions. [2025-03-08 21:30:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 21:30:03,387 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:03,387 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:03,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 21:30:03,388 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:03,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:03,388 INFO L85 PathProgramCache]: Analyzing trace with hash 140330317, now seen corresponding path program 1 times [2025-03-08 21:30:03,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:03,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104496154] [2025-03-08 21:30:03,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:03,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:03,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 21:30:03,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 21:30:03,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:03,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:30:03,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104496154] [2025-03-08 21:30:03,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104496154] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:30:03,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502926592] [2025-03-08 21:30:03,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:03,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:30:03,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:30:03,577 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) [2025-03-08 21:30:03,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 21:30:03,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 21:30:03,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 21:30:03,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:03,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:04,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 21:30:04,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:30:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:30:04,141 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:30:04,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502926592] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:04,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:30:04,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 21:30:04,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097780178] [2025-03-08 21:30:04,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:04,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:30:04,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:04,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:30:04,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:04,142 INFO L87 Difference]: Start difference. First operand 902 states and 1206 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:04,552 INFO L93 Difference]: Finished difference Result 1685 states and 2251 transitions. [2025-03-08 21:30:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:30:04,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2025-03-08 21:30:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:04,555 INFO L225 Difference]: With dead ends: 1685 [2025-03-08 21:30:04,555 INFO L226 Difference]: Without dead ends: 916 [2025-03-08 21:30:04,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:04,556 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 12 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:04,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2021 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 21:30:04,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2025-03-08 21:30:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 902. [2025-03-08 21:30:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 892 states have (on average 1.336322869955157) internal successors, (1192), 895 states have internal predecessors, (1192), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:30:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1206 transitions. [2025-03-08 21:30:04,571 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1206 transitions. Word has length 173 [2025-03-08 21:30:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:04,571 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1206 transitions. [2025-03-08 21:30:04,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1206 transitions. [2025-03-08 21:30:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 21:30:04,573 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:04,573 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:04,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 21:30:04,773 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,SelfDestructingSolverStorable20 [2025-03-08 21:30:04,774 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:04,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash -796740318, now seen corresponding path program 1 times [2025-03-08 21:30:04,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:04,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258301883] [2025-03-08 21:30:04,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:04,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:04,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 21:30:04,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 21:30:04,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:04,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:30:05,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:05,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258301883] [2025-03-08 21:30:05,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258301883] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:05,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:30:05,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:30:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545723554] [2025-03-08 21:30:05,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:05,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:30:05,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:05,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:30:05,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:05,035 INFO L87 Difference]: Start difference. First operand 902 states and 1206 transitions. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:05,404 INFO L93 Difference]: Finished difference Result 1692 states and 2257 transitions. [2025-03-08 21:30:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 21:30:05,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2025-03-08 21:30:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:05,410 INFO L225 Difference]: With dead ends: 1692 [2025-03-08 21:30:05,410 INFO L226 Difference]: Without dead ends: 928 [2025-03-08 21:30:05,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:05,412 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 20 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:05,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2442 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:30:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2025-03-08 21:30:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 916. [2025-03-08 21:30:05,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 906 states have (on average 1.335540838852097) internal successors, (1210), 909 states have internal predecessors, (1210), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:30:05,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1224 transitions. [2025-03-08 21:30:05,427 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1224 transitions. Word has length 174 [2025-03-08 21:30:05,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:05,428 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1224 transitions. [2025-03-08 21:30:05,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:05,428 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1224 transitions. [2025-03-08 21:30:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-08 21:30:05,429 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:05,429 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:05,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 21:30:05,429 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:05,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:05,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1517482832, now seen corresponding path program 1 times [2025-03-08 21:30:05,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:05,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919687334] [2025-03-08 21:30:05,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:05,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 21:30:05,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 21:30:05,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:05,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:30:05,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:05,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919687334] [2025-03-08 21:30:05,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919687334] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:30:05,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301869392] [2025-03-08 21:30:05,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:05,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:30:05,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:30:05,737 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) [2025-03-08 21:30:05,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 21:30:06,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-08 21:30:06,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-08 21:30:06,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:06,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:06,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 21:30:06,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:30:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:30:06,179 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:30:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301869392] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:06,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:30:06,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 21:30:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667051871] [2025-03-08 21:30:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:06,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:30:06,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:06,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:30:06,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:06,181 INFO L87 Difference]: Start difference. First operand 916 states and 1224 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:06,539 INFO L93 Difference]: Finished difference Result 1711 states and 2286 transitions. [2025-03-08 21:30:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:30:06,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2025-03-08 21:30:06,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:06,543 INFO L225 Difference]: With dead ends: 1711 [2025-03-08 21:30:06,543 INFO L226 Difference]: Without dead ends: 940 [2025-03-08 21:30:06,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:30:06,544 INFO L435 NwaCegarLoop]: 424 mSDtfsCounter, 17 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:06,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2044 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:30:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2025-03-08 21:30:06,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 930. [2025-03-08 21:30:06,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 920 states have (on average 1.3369565217391304) internal successors, (1230), 923 states have internal predecessors, (1230), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:30:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1244 transitions. [2025-03-08 21:30:06,567 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1244 transitions. Word has length 174 [2025-03-08 21:30:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:06,567 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1244 transitions. [2025-03-08 21:30:06,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1244 transitions. [2025-03-08 21:30:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 21:30:06,569 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:06,569 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:06,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 21:30:06,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:30:06,770 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:06,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:06,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2063623294, now seen corresponding path program 1 times [2025-03-08 21:30:06,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:06,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099055702] [2025-03-08 21:30:06,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:06,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:06,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 21:30:06,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 21:30:06,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:06,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:30:07,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:07,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099055702] [2025-03-08 21:30:07,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099055702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:07,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:30:07,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:30:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940633198] [2025-03-08 21:30:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:07,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:30:07,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:07,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:30:07,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:30:07,127 INFO L87 Difference]: Start difference. First operand 930 states and 1244 transitions. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:07,631 INFO L93 Difference]: Finished difference Result 1731 states and 2312 transitions. [2025-03-08 21:30:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:30:07,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2025-03-08 21:30:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:07,635 INFO L225 Difference]: With dead ends: 1731 [2025-03-08 21:30:07,635 INFO L226 Difference]: Without dead ends: 948 [2025-03-08 21:30:07,636 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:30:07,636 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 23 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:07,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2742 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:30:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2025-03-08 21:30:07,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 936. [2025-03-08 21:30:07,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 926 states have (on average 1.3347732181425487) internal successors, (1236), 929 states have internal predecessors, (1236), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:30:07,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1250 transitions. [2025-03-08 21:30:07,656 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1250 transitions. Word has length 175 [2025-03-08 21:30:07,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:07,656 INFO L471 AbstractCegarLoop]: Abstraction has 936 states and 1250 transitions. [2025-03-08 21:30:07,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1250 transitions. [2025-03-08 21:30:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 21:30:07,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:07,658 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:07,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-08 21:30:07,658 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:07,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1363162548, now seen corresponding path program 1 times [2025-03-08 21:30:07,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:07,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480472473] [2025-03-08 21:30:07,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:07,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:07,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 21:30:07,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 21:30:07,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:07,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:30:07,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:07,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480472473] [2025-03-08 21:30:07,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480472473] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:30:07,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281327427] [2025-03-08 21:30:07,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:07,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:30:07,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:30:07,915 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) [2025-03-08 21:30:07,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 21:30:08,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 21:30:08,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 21:30:08,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:08,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:08,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-08 21:30:08,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:30:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:30:08,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:30:08,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281327427] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:08,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:30:08,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2025-03-08 21:30:08,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746285136] [2025-03-08 21:30:08,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:08,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:30:08,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:08,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:30:08,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:30:08,604 INFO L87 Difference]: Start difference. First operand 936 states and 1250 transitions. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:09,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:09,680 INFO L93 Difference]: Finished difference Result 1752 states and 2338 transitions. [2025-03-08 21:30:09,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:30:09,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2025-03-08 21:30:09,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:09,683 INFO L225 Difference]: With dead ends: 1752 [2025-03-08 21:30:09,683 INFO L226 Difference]: Without dead ends: 966 [2025-03-08 21:30:09,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:30:09,685 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 17 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:09,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3036 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 21:30:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2025-03-08 21:30:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 960. [2025-03-08 21:30:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 950 states have (on average 1.3326315789473684) internal successors, (1266), 953 states have internal predecessors, (1266), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 21:30:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1280 transitions. [2025-03-08 21:30:09,705 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1280 transitions. Word has length 175 [2025-03-08 21:30:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:09,706 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1280 transitions. [2025-03-08 21:30:09,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1280 transitions. [2025-03-08 21:30:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 21:30:09,708 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:09,708 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:09,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 21:30:09,908 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,SelfDestructingSolverStorable24 [2025-03-08 21:30:09,912 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:09,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:09,913 INFO L85 PathProgramCache]: Analyzing trace with hash 804985424, now seen corresponding path program 1 times [2025-03-08 21:30:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104593385] [2025-03-08 21:30:09,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:09,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:09,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 21:30:10,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 21:30:10,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:10,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:30:10,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:10,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104593385] [2025-03-08 21:30:10,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104593385] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:30:10,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898158949] [2025-03-08 21:30:10,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:10,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:30:10,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:30:10,179 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) [2025-03-08 21:30:10,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 21:30:10,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 21:30:10,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 21:30:10,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:10,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:10,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 21:30:10,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:30:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:30:10,624 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:30:10,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898158949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:30:10,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:30:10,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2025-03-08 21:30:10,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504341741] [2025-03-08 21:30:10,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:30:10,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:30:10,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:30:10,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:30:10,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:30:10,625 INFO L87 Difference]: Start difference. First operand 960 states and 1280 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:30:10,693 INFO L93 Difference]: Finished difference Result 1721 states and 2287 transitions. [2025-03-08 21:30:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:30:10,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2025-03-08 21:30:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:30:10,697 INFO L225 Difference]: With dead ends: 1721 [2025-03-08 21:30:10,697 INFO L226 Difference]: Without dead ends: 963 [2025-03-08 21:30:10,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:30:10,698 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 0 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:30:10,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1319 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:30:10,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2025-03-08 21:30:10,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2025-03-08 21:30:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 952 states have (on average 1.3329831932773109) internal successors, (1269), 956 states have internal predecessors, (1269), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-03-08 21:30:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1284 transitions. [2025-03-08 21:30:10,714 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1284 transitions. Word has length 175 [2025-03-08 21:30:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:30:10,715 INFO L471 AbstractCegarLoop]: Abstraction has 963 states and 1284 transitions. [2025-03-08 21:30:10,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:30:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1284 transitions. [2025-03-08 21:30:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-08 21:30:10,716 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:30:10,716 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:30:10,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-08 21:30:10,916 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,SelfDestructingSolverStorable25 [2025-03-08 21:30:10,917 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:30:10,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:30:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash 635271308, now seen corresponding path program 1 times [2025-03-08 21:30:10,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:30:10,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664710205] [2025-03-08 21:30:10,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:10,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:30:10,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 21:30:11,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 21:30:11,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:11,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 21:30:11,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:30:11,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664710205] [2025-03-08 21:30:11,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664710205] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:30:11,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503959839] [2025-03-08 21:30:11,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:30:11,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:30:11,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:30:11,193 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) [2025-03-08 21:30:11,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 21:30:11,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-08 21:30:11,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-08 21:30:11,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:30:11,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:30:11,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 95 conjuncts are in the unsatisfiable core [2025-03-08 21:30:11,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:30:11,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-08 21:30:11,759 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2025-03-08 21:30:11,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2025-03-08 21:30:11,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 21:30:11,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2025-03-08 21:30:11,895 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 21:30:11,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2025-03-08 21:30:35,041 WARN L286 SmtUtils]: Spent 19.43s on a formula simplification. DAG size of input: 42273 DAG size of output: 1 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2025-03-08 21:30:35,042 INFO L349 Elim1Store]: treesize reduction 598000, result has 0.0 percent of original size [2025-03-08 21:30:35,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 253 stores, 25 select indices, 25 select index equivalence classes, 0 disjoint index pairs (out of 300 index pairs), introduced 300 new quantified variables, introduced 6624 case distinctions, treesize of input 51841081396 treesize of output 40818739459 [2025-03-08 21:30:55,939 WARN L286 SmtUtils]: Spent 20.29s on a formula simplification. DAG size of input: 129260 DAG size of output: 1 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)