./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c --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/array-cav19/array_init_pair_symmetr2.c -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 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 00:41:11,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 00:41:11,327 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 00:41:11,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 00:41:11,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 00:41:11,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 00:41:11,349 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 00:41:11,349 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 00:41:11,349 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 00:41:11,350 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 00:41:11,350 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 00:41:11,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 00:41:11,350 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 00:41:11,350 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 00:41:11,350 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 00:41:11,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 00:41:11,351 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 00:41:11,351 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 00:41:11,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 00:41:11,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 00:41:11,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 00:41:11,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 00:41:11,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 00:41:11,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 00:41:11,352 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 00:41:11,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 00:41:11,352 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 00:41:11,352 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 00:41:11,353 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:41:11,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 00:41:11,353 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 00:41:11,353 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 -> 4caa1f295436b297cae57f4102149db941e37f67b5d377cc8e9aa7b58bbf9350 [2025-03-08 00:41:11,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 00:41:11,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 00:41:11,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 00:41:11,588 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 00:41:11,588 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 00:41:11,589 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2025-03-08 00:41:12,706 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ffbadfa2/de96371349904e1193dfc4593cc0082e/FLAG4e9bd17c0 [2025-03-08 00:41:12,884 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 00:41:12,885 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2025-03-08 00:41:12,891 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ffbadfa2/de96371349904e1193dfc4593cc0082e/FLAG4e9bd17c0 [2025-03-08 00:41:12,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ffbadfa2/de96371349904e1193dfc4593cc0082e [2025-03-08 00:41:12,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 00:41:12,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 00:41:12,934 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 00:41:12,934 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 00:41:12,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 00:41:12,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:41:12" (1/1) ... [2025-03-08 00:41:12,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474ef4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:12, skipping insertion in model container [2025-03-08 00:41:12,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:41:12" (1/1) ... [2025-03-08 00:41:12,950 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 00:41:13,051 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/array-cav19/array_init_pair_symmetr2.c[415,428] [2025-03-08 00:41:13,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:41:13,074 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 00:41:13,080 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/array-cav19/array_init_pair_symmetr2.c[415,428] [2025-03-08 00:41:13,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:41:13,095 INFO L204 MainTranslator]: Completed translation [2025-03-08 00:41:13,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13 WrapperNode [2025-03-08 00:41:13,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 00:41:13,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 00:41:13,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 00:41:13,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 00:41:13,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,114 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2025-03-08 00:41:13,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 00:41:13,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 00:41:13,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 00:41:13,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 00:41:13,119 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,121 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,127 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2025-03-08 00:41:13,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,130 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,131 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 00:41:13,134 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 00:41:13,134 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 00:41:13,134 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 00:41:13,134 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (1/1) ... [2025-03-08 00:41:13,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:41:13,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:41:13,156 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 00:41:13,158 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 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 00:41:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 00:41:13,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 00:41:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 00:41:13,231 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 00:41:13,233 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 00:41:13,366 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L14: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2025-03-08 00:41:13,371 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-08 00:41:13,371 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 00:41:13,376 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 00:41:13,376 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 00:41:13,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:41:13 BoogieIcfgContainer [2025-03-08 00:41:13,377 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 00:41:13,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 00:41:13,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 00:41:13,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 00:41:13,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:41:12" (1/3) ... [2025-03-08 00:41:13,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204ce8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:41:13, skipping insertion in model container [2025-03-08 00:41:13,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:41:13" (2/3) ... [2025-03-08 00:41:13,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204ce8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:41:13, skipping insertion in model container [2025-03-08 00:41:13,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:41:13" (3/3) ... [2025-03-08 00:41:13,385 INFO L128 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr2.c [2025-03-08 00:41:13,398 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 00:41:13,399 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_init_pair_symmetr2.c that has 2 procedures, 20 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-08 00:41:13,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 00:41:13,454 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;@1fb12022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 00:41:13,454 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 00:41:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-08 00:41:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 00:41:13,463 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:41:13,463 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:41:13,463 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:41:13,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:41:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1325606094, now seen corresponding path program 1 times [2025-03-08 00:41:13,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:41:13,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628400280] [2025-03-08 00:41:13,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:41:13,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:41:13,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 00:41:13,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 00:41:13,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:41:13,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:41:13,642 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 00:41:13,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:41:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628400280] [2025-03-08 00:41:13,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628400280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:41:13,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:41:13,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:41:13,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901712974] [2025-03-08 00:41:13,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:41:13,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:41:13,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:41:13,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:41:13,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:41:13,660 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:41:13,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:41:13,727 INFO L93 Difference]: Finished difference Result 44 states and 67 transitions. [2025-03-08 00:41:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:41:13,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-08 00:41:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:41:13,735 INFO L225 Difference]: With dead ends: 44 [2025-03-08 00:41:13,736 INFO L226 Difference]: Without dead ends: 23 [2025-03-08 00:41:13,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:41:13,741 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 00:41:13,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 00:41:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-08 00:41:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2025-03-08 00:41:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-08 00:41:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2025-03-08 00:41:13,773 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 7 [2025-03-08 00:41:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:41:13,773 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2025-03-08 00:41:13,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:41:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2025-03-08 00:41:13,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 00:41:13,775 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:41:13,775 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:41:13,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 00:41:13,775 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:41:13,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:41:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1926661840, now seen corresponding path program 1 times [2025-03-08 00:41:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:41:13,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043518658] [2025-03-08 00:41:13,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:41:13,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:41:13,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 00:41:13,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 00:41:13,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:41:13,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:41:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 00:41:13,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:41:13,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043518658] [2025-03-08 00:41:13,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043518658] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:41:13,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279464482] [2025-03-08 00:41:13,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:41:13,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:41:13,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:41:13,908 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 00:41:13,910 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 00:41:13,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 00:41:13,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 00:41:13,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:41:13,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:41:13,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 00:41:13,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:41:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 00:41:14,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:41:14,128 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 00:41:14,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279464482] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:41:14,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:41:14,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2025-03-08 00:41:14,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80032925] [2025-03-08 00:41:14,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:41:14,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 00:41:14,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:41:14,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 00:41:14,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-03-08 00:41:14,131 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 00:41:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:41:14,277 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2025-03-08 00:41:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 00:41:14,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 25 [2025-03-08 00:41:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:41:14,278 INFO L225 Difference]: With dead ends: 55 [2025-03-08 00:41:14,278 INFO L226 Difference]: Without dead ends: 48 [2025-03-08 00:41:14,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-03-08 00:41:14,279 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 84 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:41:14,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 25 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:41:14,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-08 00:41:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2025-03-08 00:41:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 00:41:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2025-03-08 00:41:14,290 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 25 [2025-03-08 00:41:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:41:14,291 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2025-03-08 00:41:14,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 00:41:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2025-03-08 00:41:14,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 00:41:14,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:41:14,292 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:41:14,299 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 00:41:14,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:41:14,498 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:41:14,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:41:14,499 INFO L85 PathProgramCache]: Analyzing trace with hash -92514354, now seen corresponding path program 2 times [2025-03-08 00:41:14,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:41:14,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579343589] [2025-03-08 00:41:14,499 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:41:14,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:41:14,512 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-03-08 00:41:14,538 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 00:41:14,538 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:41:14,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:41:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-03-08 00:41:14,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:41:14,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579343589] [2025-03-08 00:41:14,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579343589] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:41:14,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912497856] [2025-03-08 00:41:14,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:41:14,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:41:14,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:41:14,772 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 00:41:14,772 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 00:41:14,821 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-03-08 00:41:14,854 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 00:41:14,854 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:41:14,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:41:14,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 00:41:14,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:41:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-03-08 00:41:15,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:41:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-03-08 00:41:15,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912497856] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:41:15,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:41:15,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2025-03-08 00:41:15,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17718376] [2025-03-08 00:41:15,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:41:15,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 00:41:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:41:15,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 00:41:15,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2025-03-08 00:41:15,211 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2025-03-08 00:41:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:41:15,467 INFO L93 Difference]: Finished difference Result 124 states and 168 transitions. [2025-03-08 00:41:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 00:41:15,467 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 79 [2025-03-08 00:41:15,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:41:15,468 INFO L225 Difference]: With dead ends: 124 [2025-03-08 00:41:15,468 INFO L226 Difference]: Without dead ends: 114 [2025-03-08 00:41:15,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2025-03-08 00:41:15,469 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 194 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 00:41:15,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 55 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 00:41:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-08 00:41:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2025-03-08 00:41:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2025-03-08 00:41:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 104 transitions. [2025-03-08 00:41:15,484 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 104 transitions. Word has length 79 [2025-03-08 00:41:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:41:15,484 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 104 transitions. [2025-03-08 00:41:15,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 12 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2025-03-08 00:41:15,485 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 104 transitions. [2025-03-08 00:41:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-08 00:41:15,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:41:15,491 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:41:15,496 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 00:41:15,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-08 00:41:15,693 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:41:15,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:41:15,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1452901298, now seen corresponding path program 3 times [2025-03-08 00:41:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:41:15,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453670183] [2025-03-08 00:41:15,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:41:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:41:15,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 187 statements into 22 equivalence classes. [2025-03-08 00:41:15,824 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 58 of 187 statements. [2025-03-08 00:41:15,824 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 00:41:15,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:41:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1975 trivial. 0 not checked. [2025-03-08 00:41:16,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:41:16,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453670183] [2025-03-08 00:41:16,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453670183] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:41:16,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908168188] [2025-03-08 00:41:16,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:41:16,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:41:16,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:41:16,058 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 00:41:16,059 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 00:41:16,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 187 statements into 22 equivalence classes. [2025-03-08 00:41:16,211 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 58 of 187 statements. [2025-03-08 00:41:16,211 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 00:41:16,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:41:16,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 00:41:16,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:41:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1975 trivial. 0 not checked. [2025-03-08 00:41:16,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:41:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1975 trivial. 0 not checked. [2025-03-08 00:41:16,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908168188] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:41:16,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:41:16,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 37 [2025-03-08 00:41:16,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508190294] [2025-03-08 00:41:16,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:41:16,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 00:41:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:41:16,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 00:41:16,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2025-03-08 00:41:16,842 INFO L87 Difference]: Start difference. First operand 73 states and 104 transitions. Second operand has 37 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 37 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-08 00:41:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:41:17,424 INFO L93 Difference]: Finished difference Result 262 states and 354 transitions. [2025-03-08 00:41:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 00:41:17,424 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 37 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 187 [2025-03-08 00:41:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:41:17,426 INFO L225 Difference]: With dead ends: 262 [2025-03-08 00:41:17,426 INFO L226 Difference]: Without dead ends: 246 [2025-03-08 00:41:17,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 00:41:17,428 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 462 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 00:41:17,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 100 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 00:41:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-03-08 00:41:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 145. [2025-03-08 00:41:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 66 states have call successors, (66), 1 states have call predecessors, (66), 1 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2025-03-08 00:41:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 212 transitions. [2025-03-08 00:41:17,451 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 212 transitions. Word has length 187 [2025-03-08 00:41:17,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:41:17,454 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 212 transitions. [2025-03-08 00:41:17,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 37 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-08 00:41:17,454 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 212 transitions. [2025-03-08 00:41:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2025-03-08 00:41:17,460 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:41:17,460 INFO L218 NwaCegarLoop]: trace histogram [66, 66, 66, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:41:17,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 00:41:17,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:41:17,662 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:41:17,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:41:17,662 INFO L85 PathProgramCache]: Analyzing trace with hash 557004110, now seen corresponding path program 4 times [2025-03-08 00:41:17,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:41:17,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78618881] [2025-03-08 00:41:17,662 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:41:17,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:41:17,710 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 403 statements into 2 equivalence classes. [2025-03-08 00:41:18,004 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 403 of 403 statements. [2025-03-08 00:41:18,005 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 00:41:18,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:41:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10010 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 9757 trivial. 0 not checked. [2025-03-08 00:41:19,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:41:19,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78618881] [2025-03-08 00:41:19,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78618881] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:41:19,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349908879] [2025-03-08 00:41:19,304 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:41:19,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:41:19,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:41:19,306 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 00:41:19,308 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 00:41:19,392 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 403 statements into 2 equivalence classes.