./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:37:22,304 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:37:22,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 13:37:22,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:37:22,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:37:22,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:37:22,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:37:22,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:37:22,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:37:22,454 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:37:22,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:37:22,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:37:22,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:37:22,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:37:22,456 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:37:22,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:37:22,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 13:37:22,456 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:37:22,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:37:22,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:37:22,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:37:22,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 13:37:22,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:37:22,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 13:37:22,457 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 13:37:22,457 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:37:22,457 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:37:22,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 13:37:22,457 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:37:22,457 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:37:22,457 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:37:22,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:37:22,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:37:22,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:37:22,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:37:22,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:37:22,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:37:22,458 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 13:37:22,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 13:37:22,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:37:22,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:37:22,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:37:22,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:37:22,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:37:22,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:37:22,459 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-jdk21/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 ! overflow) ) 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 -> 52ed361cdf08860b8c7c7d564ef95393de2d3a38663ac135cf0da9ded1f39b3f [2025-02-06 13:37:22,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:37:22,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:37:22,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:37:22,714 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:37:22,715 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:37:22,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2025-02-06 13:37:23,983 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/980c2a330/99f54969d5f24736832ddb820c535c9e/FLAGaff13edf8 [2025-02-06 13:37:24,493 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:37:24,493 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2025-02-06 13:37:24,515 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/980c2a330/99f54969d5f24736832ddb820c535c9e/FLAGaff13edf8 [2025-02-06 13:37:24,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/980c2a330/99f54969d5f24736832ddb820c535c9e [2025-02-06 13:37:24,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:37:24,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:37:24,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:37:24,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:37:24,622 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:37:24,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:37:24" (1/1) ... [2025-02-06 13:37:24,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e772dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:24, skipping insertion in model container [2025-02-06 13:37:24,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:37:24" (1/1) ... [2025-02-06 13:37:24,657 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:37:24,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:37:24,992 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:37:25,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:37:25,142 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:37:25,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25 WrapperNode [2025-02-06 13:37:25,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:37:25,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:37:25,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:37:25,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:37:25,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,219 INFO L138 Inliner]: procedures = 142, calls = 66, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 177 [2025-02-06 13:37:25,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:37:25,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:37:25,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:37:25,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:37:25,232 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,247 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,305 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 7 writes are split as follows [0, 7]. [2025-02-06 13:37:25,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,321 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:37:25,339 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:37:25,339 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:37:25,340 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:37:25,341 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (1/1) ... [2025-02-06 13:37:25,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:37:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:37:25,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:37:25,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:37:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-02-06 13:37:25,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-02-06 13:37:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2025-02-06 13:37:25,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2025-02-06 13:37:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2025-02-06 13:37:25,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2025-02-06 13:37:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2025-02-06 13:37:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 13:37:25,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2025-02-06 13:37:25,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2025-02-06 13:37:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:37:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 13:37:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2025-02-06 13:37:25,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2025-02-06 13:37:25,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:37:25,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:37:25,566 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:37:25,569 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:37:25,822 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L667: havoc ldv_set_empty_#t~ret31#1; [2025-02-06 13:37:25,822 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L624: havoc ldv_list_empty_#t~mem10#1.base, ldv_list_empty_#t~mem10#1.offset; [2025-02-06 13:37:25,861 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2025-02-06 13:37:25,861 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:37:25,868 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:37:25,868 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:37:25,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:37:25 BoogieIcfgContainer [2025-02-06 13:37:25,868 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:37:25,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:37:25,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:37:25,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:37:25,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:37:24" (1/3) ... [2025-02-06 13:37:25,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34757215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:37:25, skipping insertion in model container [2025-02-06 13:37:25,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:37:25" (2/3) ... [2025-02-06 13:37:25,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34757215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:37:25, skipping insertion in model container [2025-02-06 13:37:25,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:37:25" (3/3) ... [2025-02-06 13:37:25,876 INFO L128 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2025-02-06 13:37:25,890 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:37:25,892 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test_mutex_unbounded-2.i that has 7 procedures, 79 locations, 1 initial locations, 5 loop locations, and 2 error locations. [2025-02-06 13:37:25,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:37:25,953 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;@54196c1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:37:25,953 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 13:37:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 57 states have (on average 1.263157894736842) internal successors, (72), 59 states have internal predecessors, (72), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-06 13:37:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-06 13:37:25,962 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 13:37:25,963 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:37:25,963 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-06 13:37:25,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:37:25,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1578314931, now seen corresponding path program 1 times [2025-02-06 13:37:25,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:37:25,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751973076] [2025-02-06 13:37:25,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:37:25,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:37:26,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 13:37:26,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 13:37:26,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:37:26,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:37:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:37:26,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:37:26,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751973076] [2025-02-06 13:37:26,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751973076] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:37:26,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:37:26,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 13:37:26,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214693770] [2025-02-06 13:37:26,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:37:26,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 13:37:26,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:37:26,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 13:37:26,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 13:37:26,143 INFO L87 Difference]: Start difference. First operand has 79 states, 57 states have (on average 1.263157894736842) internal successors, (72), 59 states have internal predecessors, (72), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 13:37:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 13:37:26,158 INFO L93 Difference]: Finished difference Result 150 states and 191 transitions. [2025-02-06 13:37:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 13:37:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2025-02-06 13:37:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 13:37:26,163 INFO L225 Difference]: With dead ends: 150 [2025-02-06 13:37:26,163 INFO L226 Difference]: Without dead ends: 25 [2025-02-06 13:37:26,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 13:37:26,167 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 13:37:26,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 13:37:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-06 13:37:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-02-06 13:37:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 13:37:26,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2025-02-06 13:37:26,190 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2025-02-06 13:37:26,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 13:37:26,191 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2025-02-06 13:37:26,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 13:37:26,191 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2025-02-06 13:37:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-06 13:37:26,192 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 13:37:26,192 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:37:26,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:37:26,192 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-06 13:37:26,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:37:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2088849108, now seen corresponding path program 1 times [2025-02-06 13:37:26,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:37:26,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405856365] [2025-02-06 13:37:26,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:37:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:37:26,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 13:37:26,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 13:37:26,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:37:26,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:37:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:37:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:37:26,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405856365] [2025-02-06 13:37:26,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405856365] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:37:26,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:37:26,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:37:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849571210] [2025-02-06 13:37:26,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:37:26,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:37:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:37:26,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:37:26,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:37:26,378 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 13:37:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 13:37:26,407 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2025-02-06 13:37:26,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:37:26,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2025-02-06 13:37:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 13:37:26,408 INFO L225 Difference]: With dead ends: 34 [2025-02-06 13:37:26,408 INFO L226 Difference]: Without dead ends: 32 [2025-02-06 13:37:26,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:37:26,409 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 13:37:26,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 13:37:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-06 13:37:26,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-02-06 13:37:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 13:37:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2025-02-06 13:37:26,415 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 22 [2025-02-06 13:37:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 13:37:26,416 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2025-02-06 13:37:26,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 13:37:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2025-02-06 13:37:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 13:37:26,419 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 13:37:26,419 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 13:37:26,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:37:26,420 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-06 13:37:26,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:37:26,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1186035840, now seen corresponding path program 1 times [2025-02-06 13:37:26,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:37:26,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173036676] [2025-02-06 13:37:26,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:37:26,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:37:26,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 13:37:26,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 13:37:26,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:37:26,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:37:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 13:37:26,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:37:26,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173036676] [2025-02-06 13:37:26,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173036676] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:37:26,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008370802] [2025-02-06 13:37:26,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:37:26,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:37:26,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:37:26,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:37:26,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 13:37:26,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-06 13:37:26,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 13:37:26,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:37:26,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:37:26,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 13:37:26,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:37:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 13:37:26,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:37:26,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008370802] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:37:26,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 13:37:26,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 13:37:26,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230375293] [2025-02-06 13:37:26,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:37:26,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:37:26,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:37:26,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:37:26,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 13:37:26,897 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 13:37:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 13:37:26,926 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2025-02-06 13:37:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:37:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2025-02-06 13:37:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 13:37:26,928 INFO L225 Difference]: With dead ends: 32 [2025-02-06 13:37:26,928 INFO L226 Difference]: Without dead ends: 31 [2025-02-06 13:37:26,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 13:37:26,928 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 13:37:26,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 103 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 13:37:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-02-06 13:37:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2025-02-06 13:37:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 13:37:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2025-02-06 13:37:26,932 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 42 [2025-02-06 13:37:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 13:37:26,932 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2025-02-06 13:37:26,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 13:37:26,933 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2025-02-06 13:37:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-06 13:37:26,933 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 13:37:26,933 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 13:37:26,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 13:37:27,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:37:27,138 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-06 13:37:27,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:37:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1887594665, now seen corresponding path program 1 times [2025-02-06 13:37:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:37:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5101751] [2025-02-06 13:37:27,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:37:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:37:27,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 13:37:27,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 13:37:27,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:37:27,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:37:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 13:37:27,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:37:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5101751] [2025-02-06 13:37:27,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5101751] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:37:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540210107] [2025-02-06 13:37:27,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:37:27,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:37:27,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:37:27,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:37:27,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 13:37:27,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 13:37:27,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 13:37:27,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:37:27,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:37:27,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 13:37:27,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:37:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 13:37:27,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:37:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 13:37:27,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540210107] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:37:27,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:37:27,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 13:37:27,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634466688] [2025-02-06 13:37:27,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:37:27,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 13:37:27,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:37:27,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 13:37:27,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 13:37:27,687 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2025-02-06 13:37:27,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 13:37:27,763 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2025-02-06 13:37:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 13:37:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 43 [2025-02-06 13:37:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 13:37:27,764 INFO L225 Difference]: With dead ends: 53 [2025-02-06 13:37:27,764 INFO L226 Difference]: Without dead ends: 52 [2025-02-06 13:37:27,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 13:37:27,765 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 13:37:27,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 13:37:27,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-06 13:37:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-02-06 13:37:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-06 13:37:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2025-02-06 13:37:27,770 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 43 [2025-02-06 13:37:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 13:37:27,771 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2025-02-06 13:37:27,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 12 states have internal predecessors, (39), 6 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2025-02-06 13:37:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2025-02-06 13:37:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-06 13:37:27,772 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 13:37:27,773 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2025-02-06 13:37:27,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 13:37:27,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:37:27,977 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-06 13:37:27,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:37:27,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1728024275, now seen corresponding path program 2 times [2025-02-06 13:37:27,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:37:27,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083932215] [2025-02-06 13:37:27,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:37:27,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:37:28,006 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 103 statements into 2 equivalence classes. [2025-02-06 13:37:28,011 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 103 statements. [2025-02-06 13:37:28,011 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:37:28,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:37:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-02-06 13:37:28,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:37:28,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083932215] [2025-02-06 13:37:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083932215] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:37:28,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595828516] [2025-02-06 13:37:28,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:37:28,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:37:28,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:37:28,048 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:37:28,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 13:37:28,233 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 103 statements into 2 equivalence classes. [2025-02-06 13:37:28,266 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 23 of 103 statements. [2025-02-06 13:37:28,266 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:37:28,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:37:28,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 13:37:28,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:37:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-02-06 13:37:28,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:37:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2025-02-06 13:37:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595828516] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:37:28,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:37:28,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2025-02-06 13:37:28,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370397849] [2025-02-06 13:37:28,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:37:28,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:37:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:37:28,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:37:28,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:37:28,488 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 13:37:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 13:37:28,513 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2025-02-06 13:37:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:37:28,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2025-02-06 13:37:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 13:37:28,514 INFO L225 Difference]: With dead ends: 52 [2025-02-06 13:37:28,515 INFO L226 Difference]: Without dead ends: 0 [2025-02-06 13:37:28,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 13:37:28,516 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 13:37:28,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 13:37:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-06 13:37:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-06 13:37:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2025-02-06 13:37:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 13:37:28,518 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2025-02-06 13:37:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 13:37:28,518 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 13:37:28,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 13:37:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-06 13:37:28,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-06 13:37:28,520 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-06 13:37:28,521 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-06 13:37:28,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 13:37:28,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:37:28,729 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2025-02-06 13:37:28,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-06 13:37:28,817 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 13:37:28,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 01:37:28 BoogieIcfgContainer [2025-02-06 13:37:28,831 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 13:37:28,831 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 13:37:28,831 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 13:37:28,831 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 13:37:28,832 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:37:25" (3/4) ... [2025-02-06 13:37:28,833 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 13:37:28,841 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure reach_error [2025-02-06 13:37:28,845 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_list_add [2025-02-06 13:37:28,846 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_is_in_set [2025-02-06 13:37:28,846 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_list_del [2025-02-06 13:37:28,846 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure ldv_successful_malloc [2025-02-06 13:37:28,846 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __ldv_list_add [2025-02-06 13:37:28,850 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2025-02-06 13:37:28,854 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-02-06 13:37:28,854 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 13:37:28,854 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 13:37:28,981 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 13:37:28,981 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 13:37:28,981 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 13:37:28,982 INFO L158 Benchmark]: Toolchain (without parser) took 4370.31ms. Allocated memory was 142.6MB in the beginning and 276.8MB in the end (delta: 134.2MB). Free memory was 107.8MB in the beginning and 219.2MB in the end (delta: -111.4MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2025-02-06 13:37:28,985 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 226.5MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:37:28,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.96ms. Allocated memory is still 142.6MB. Free memory was 107.8MB in the beginning and 87.7MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 13:37:28,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.21ms. Allocated memory is still 142.6MB. Free memory was 86.8MB in the beginning and 85.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:37:28,986 INFO L158 Benchmark]: Boogie Preprocessor took 117.83ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 79.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 13:37:28,986 INFO L158 Benchmark]: IcfgBuilder took 529.17ms. Allocated memory is still 142.6MB. Free memory was 79.4MB in the beginning and 55.1MB in the end (delta: 24.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 13:37:28,986 INFO L158 Benchmark]: TraceAbstraction took 2960.53ms. Allocated memory was 142.6MB in the beginning and 276.8MB in the end (delta: 134.2MB). Free memory was 55.1MB in the beginning and 227.4MB in the end (delta: -172.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:37:28,987 INFO L158 Benchmark]: Witness Printer took 150.29ms. Allocated memory is still 276.8MB. Free memory was 227.4MB in the beginning and 219.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 13:37:28,988 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 226.5MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 524.96ms. Allocated memory is still 142.6MB. Free memory was 107.8MB in the beginning and 87.7MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.21ms. Allocated memory is still 142.6MB. Free memory was 86.8MB in the beginning and 85.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 117.83ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 79.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 529.17ms. Allocated memory is still 142.6MB. Free memory was 79.4MB in the beginning and 55.1MB in the end (delta: 24.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2960.53ms. Allocated memory was 142.6MB in the beginning and 276.8MB in the end (delta: 134.2MB). Free memory was 55.1MB in the beginning and 227.4MB in the end (delta: -172.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 150.29ms. Allocated memory is still 276.8MB. Free memory was 227.4MB in the beginning and 219.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 693]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 79 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 428 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 256 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 118 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 172 mSDtfsCounter, 118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 350 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=0, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 420 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 914 SizeOfPredicates, 2 NumberOfNonLiveVariables, 885 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 599/698 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 693]: Location Invariant Derived location invariant: (((N <= 2147483647) && (1 <= i)) || ((i == 0) && (N <= 2147483647))) RESULT: Ultimate proved your program to be correct! [2025-02-06 13:37:29,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE