./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 798a7b37 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-?-798a7b3-m [2025-03-03 09:31:39,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:31:39,988 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:31:39,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:31:39,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:31:40,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:31:40,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:31:40,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:31:40,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:31:40,017 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:31:40,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:31:40,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:31:40,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:31:40,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:31:40,018 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:31:40,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:31:40,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:31:40,018 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:31:40,019 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:31:40,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:31:40,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:31:40,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:31:40,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:31:40,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:31:40,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:31:40,020 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:31:40,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:31:40,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:31:40,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:31:40,021 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:31:40,021 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:31:40,021 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:31:40,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:31:40,021 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 [2025-03-03 09:31:40,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:31:40,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:31:40,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:31:40,238 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:31:40,238 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:31:40,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2025-03-03 09:31:41,373 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55827b66d/d179b0a2cfe143a5919a7471d3d14fcd/FLAGcd45955fa [2025-03-03 09:31:41,604 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:31:41,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_pair_symmetr2.c [2025-03-03 09:31:41,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55827b66d/d179b0a2cfe143a5919a7471d3d14fcd/FLAGcd45955fa [2025-03-03 09:31:41,944 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55827b66d/d179b0a2cfe143a5919a7471d3d14fcd [2025-03-03 09:31:41,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:31:41,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:31:41,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:31:41,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:31:41,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:31:41,951 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:31:41" (1/1) ... [2025-03-03 09:31:41,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e078f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:41, skipping insertion in model container [2025-03-03 09:31:41,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:31:41" (1/1) ... [2025-03-03 09:31:41,960 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:31:42,056 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] [2025-03-03 09:31:42,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:31:42,079 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:31:42,087 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] [2025-03-03 09:31:42,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:31:42,106 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:31:42,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42 WrapperNode [2025-03-03 09:31:42,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:31:42,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:31:42,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:31:42,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:31:42,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,133 INFO L138 Inliner]: procedures = 15, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2025-03-03 09:31:42,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:31:42,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:31:42,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:31:42,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:31:42,140 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,142 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,154 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]. [2025-03-03 09:31:42,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,160 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,167 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:31:42,169 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:31:42,169 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:31:42,169 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:31:42,169 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (1/1) ... [2025-03-03 09:31:42,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:31:42,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:31:42,195 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) [2025-03-03 09:31:42,197 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 [2025-03-03 09:31:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:31:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 09:31:42,215 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 09:31:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:31:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 09:31:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:31:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-03 09:31:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 09:31:42,264 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:31:42,266 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:31:42,403 INFO L1325 $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; [2025-03-03 09:31:42,409 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-03-03 09:31:42,409 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:31:42,416 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:31:42,416 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:31:42,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:31:42 BoogieIcfgContainer [2025-03-03 09:31:42,417 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:31:42,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:31:42,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:31:42,424 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:31:42,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:31:41" (1/3) ... [2025-03-03 09:31:42,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a16e14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:31:42, skipping insertion in model container [2025-03-03 09:31:42,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:31:42" (2/3) ... [2025-03-03 09:31:42,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a16e14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:31:42, skipping insertion in model container [2025-03-03 09:31:42,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:31:42" (3/3) ... [2025-03-03 09:31:42,426 INFO L128 eAbstractionObserver]: Analyzing ICFG array_init_pair_symmetr2.c [2025-03-03 09:31:42,438 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:31:42,439 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. [2025-03-03 09:31:42,472 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:31:42,482 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;@5e3a4dc1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:31:42,483 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:31:42,485 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) [2025-03-03 09:31:42,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-03 09:31:42,490 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:31:42,490 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:31:42,491 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:31:42,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:31:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1325606094, now seen corresponding path program 1 times [2025-03-03 09:31:42,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:31:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542425757] [2025-03-03 09:31:42,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:31:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:31:42,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-03 09:31:42,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-03 09:31:42,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:31:42,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:31:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:31:42,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:31:42,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542425757] [2025-03-03 09:31:42,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542425757] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:31:42,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:31:42,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:31:42,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568939343] [2025-03-03 09:31:42,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:31:42,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:31:42,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:31:42,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:31:42,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:31:42,707 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) [2025-03-03 09:31:42,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:31:42,793 INFO L93 Difference]: Finished difference Result 44 states and 67 transitions. [2025-03-03 09:31:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:31:42,795 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 [2025-03-03 09:31:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:31:42,798 INFO L225 Difference]: With dead ends: 44 [2025-03-03 09:31:42,800 INFO L226 Difference]: Without dead ends: 23 [2025-03-03 09:31:42,802 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 [2025-03-03 09:31:42,805 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, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:31:42,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:31:42,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-03 09:31:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2025-03-03 09:31:42,832 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) [2025-03-03 09:31:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2025-03-03 09:31:42,838 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 7 [2025-03-03 09:31:42,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:31:42,839 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2025-03-03 09:31:42,839 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) [2025-03-03 09:31:42,839 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2025-03-03 09:31:42,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-03 09:31:42,841 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:31:42,841 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:31:42,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:31:42,842 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:31:42,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:31:42,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1926661840, now seen corresponding path program 1 times [2025-03-03 09:31:42,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:31:42,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774563768] [2025-03-03 09:31:42,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:31:42,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:31:42,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-03 09:31:42,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-03 09:31:42,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:31:42,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:31:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 09:31:43,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:31:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774563768] [2025-03-03 09:31:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774563768] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:31:43,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662184487] [2025-03-03 09:31:43,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:31:43,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:31:43,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:31:43,003 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) [2025-03-03 09:31:43,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 09:31:43,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-03 09:31:43,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-03 09:31:43,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:31:43,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:31:43,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 09:31:43,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:31:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 09:31:43,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:31:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 09:31:43,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662184487] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:31:43,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:31:43,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2025-03-03 09:31:43,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696233567] [2025-03-03 09:31:43,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:31:43,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 09:31:43,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:31:43,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 09:31:43,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-03-03 09:31:43,197 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) [2025-03-03 09:31:43,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:31:43,341 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2025-03-03 09:31:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 09:31:43,342 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 [2025-03-03 09:31:43,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:31:43,342 INFO L225 Difference]: With dead ends: 55 [2025-03-03 09:31:43,342 INFO L226 Difference]: Without dead ends: 48 [2025-03-03 09:31:43,343 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 [2025-03-03 09:31:43,344 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 [2025-03-03 09:31:43,344 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] [2025-03-03 09:31:43,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-03-03 09:31:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2025-03-03 09:31:43,356 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) [2025-03-03 09:31:43,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2025-03-03 09:31:43,358 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 25 [2025-03-03 09:31:43,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:31:43,359 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2025-03-03 09:31:43,359 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) [2025-03-03 09:31:43,359 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2025-03-03 09:31:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-03 09:31:43,361 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:31:43,361 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:31:43,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 09:31:43,561 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 [2025-03-03 09:31:43,562 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:31:43,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:31:43,563 INFO L85 PathProgramCache]: Analyzing trace with hash -92514354, now seen corresponding path program 2 times [2025-03-03 09:31:43,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:31:43,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149845353] [2025-03-03 09:31:43,563 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:31:43,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:31:43,584 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-03-03 09:31:43,617 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 09:31:43,620 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:31:43,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:31:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-03-03 09:31:43,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:31:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149845353] [2025-03-03 09:31:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149845353] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:31:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503216098] [2025-03-03 09:31:43,833 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:31:43,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:31:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:31:43,835 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) [2025-03-03 09:31:43,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 09:31:43,889 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-03-03 09:31:43,919 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 09:31:43,919 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:31:43,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:31:43,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 09:31:43,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:31:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-03-03 09:31:44,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:31:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-03-03 09:31:44,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503216098] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:31:44,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:31:44,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2025-03-03 09:31:44,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646582077] [2025-03-03 09:31:44,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:31:44,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-03 09:31:44,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:31:44,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-03 09:31:44,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2025-03-03 09:31:44,253 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) [2025-03-03 09:31:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:31:44,510 INFO L93 Difference]: Finished difference Result 124 states and 168 transitions. [2025-03-03 09:31:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-03 09:31:44,510 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 [2025-03-03 09:31:44,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:31:44,512 INFO L225 Difference]: With dead ends: 124 [2025-03-03 09:31:44,512 INFO L226 Difference]: Without dead ends: 114 [2025-03-03 09:31:44,512 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 [2025-03-03 09:31:44,513 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 [2025-03-03 09:31:44,513 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] [2025-03-03 09:31:44,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-03 09:31:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2025-03-03 09:31:44,531 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) [2025-03-03 09:31:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 104 transitions. [2025-03-03 09:31:44,532 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 104 transitions. Word has length 79 [2025-03-03 09:31:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:31:44,533 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 104 transitions. [2025-03-03 09:31:44,533 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) [2025-03-03 09:31:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 104 transitions. [2025-03-03 09:31:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-03 09:31:44,535 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:31:44,535 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:31:44,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 09:31:44,736 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 [2025-03-03 09:31:44,736 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:31:44,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:31:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1452901298, now seen corresponding path program 3 times [2025-03-03 09:31:44,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:31:44,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553024271] [2025-03-03 09:31:44,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:31:44,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:31:44,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 187 statements into 22 equivalence classes. [2025-03-03 09:31:44,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 58 of 187 statements. [2025-03-03 09:31:44,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-03 09:31:44,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:31:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1975 trivial. 0 not checked. [2025-03-03 09:31:45,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:31:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553024271] [2025-03-03 09:31:45,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553024271] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:31:45,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253440157] [2025-03-03 09:31:45,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:31:45,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:31:45,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:31:45,072 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) [2025-03-03 09:31:45,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 09:31:45,138 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 187 statements into 22 equivalence classes. [2025-03-03 09:31:45,239 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 58 of 187 statements. [2025-03-03 09:31:45,239 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-03 09:31:45,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:31:45,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 09:31:45,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:31:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1975 trivial. 0 not checked. [2025-03-03 09:31:45,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:31:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2030 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1975 trivial. 0 not checked. [2025-03-03 09:31:45,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253440157] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:31:45,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:31:45,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 37 [2025-03-03 09:31:45,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887672984] [2025-03-03 09:31:45,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:31:45,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-03 09:31:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:31:45,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-03 09:31:45,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2025-03-03 09:31:45,902 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) [2025-03-03 09:31:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:31:46,534 INFO L93 Difference]: Finished difference Result 262 states and 354 transitions. [2025-03-03 09:31:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-03 09:31:46,534 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 [2025-03-03 09:31:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:31:46,546 INFO L225 Difference]: With dead ends: 262 [2025-03-03 09:31:46,547 INFO L226 Difference]: Without dead ends: 246 [2025-03-03 09:31:46,548 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 [2025-03-03 09:31:46,549 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, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:31:46,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 100 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:31:46,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-03-03 09:31:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 145. [2025-03-03 09:31:46,578 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) [2025-03-03 09:31:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 212 transitions. [2025-03-03 09:31:46,582 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 212 transitions. Word has length 187 [2025-03-03 09:31:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:31:46,583 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 212 transitions. [2025-03-03 09:31:46,583 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) [2025-03-03 09:31:46,584 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 212 transitions. [2025-03-03 09:31:46,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2025-03-03 09:31:46,591 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:31:46,591 INFO L218 NwaCegarLoop]: trace histogram [66, 66, 66, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:31:46,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 09:31:46,796 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 [2025-03-03 09:31:46,796 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:31:46,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:31:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 557004110, now seen corresponding path program 4 times [2025-03-03 09:31:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:31:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418677967] [2025-03-03 09:31:46,797 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:31:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:31:46,829 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 403 statements into 2 equivalence classes. [2025-03-03 09:31:47,107 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 403 of 403 statements. [2025-03-03 09:31:47,108 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:31:47,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:31:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 10010 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 9757 trivial. 0 not checked. [2025-03-03 09:31:48,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:31:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418677967] [2025-03-03 09:31:48,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418677967] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:31:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039018183] [2025-03-03 09:31:48,431 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:31:48,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:31:48,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:31:48,433 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) [2025-03-03 09:31:48,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 09:31:48,516 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 403 statements into 2 equivalence classes.