./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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/pthread-ext/36_stack_cas_p0_vs_concur.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 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 13:54:51,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 13:54:51,090 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 13:54:51,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 13:54:51,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 13:54:51,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 13:54:51,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 13:54:51,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 13:54:51,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 13:54:51,111 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 13:54:51,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 13:54:51,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 13:54:51,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 13:54:51,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 13:54:51,111 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 13:54:51,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 13:54:51,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 13:54:51,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 13:54:51,113 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 13:54:51,113 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 13:54:51,113 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 13:54:51,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 13:54:51,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 13:54:51,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 13:54:51,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:54:51,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 13:54:51,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 13:54:51,113 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 13:54:51,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 13:54:51,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 13:54:51,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 13:54:51,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 13:54:51,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 13:54:51,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 13:54:51,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 13:54:51,114 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 -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2025-02-08 13:54:51,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 13:54:51,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 13:54:51,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 13:54:51,320 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 13:54:51,320 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 13:54:51,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-02-08 13:54:52,401 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f11d8a5c/fc1a368889df410cada504b94c17a88c/FLAG803a89a63 [2025-02-08 13:54:52,725 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 13:54:52,725 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-02-08 13:54:52,733 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f11d8a5c/fc1a368889df410cada504b94c17a88c/FLAG803a89a63 [2025-02-08 13:54:52,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f11d8a5c/fc1a368889df410cada504b94c17a88c [2025-02-08 13:54:52,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 13:54:52,980 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 13:54:52,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 13:54:52,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 13:54:52,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 13:54:52,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:54:52" (1/1) ... [2025-02-08 13:54:52,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fdcfbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:52, skipping insertion in model container [2025-02-08 13:54:52,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:54:52" (1/1) ... [2025-02-08 13:54:53,016 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 13:54:53,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:54:53,210 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 13:54:53,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 13:54:53,275 INFO L204 MainTranslator]: Completed translation [2025-02-08 13:54:53,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53 WrapperNode [2025-02-08 13:54:53,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 13:54:53,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 13:54:53,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 13:54:53,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 13:54:53,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,306 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 170 [2025-02-08 13:54:53,306 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 13:54:53,306 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 13:54:53,307 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 13:54:53,307 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 13:54:53,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,322 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 3, 6]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0]. The 5 writes are split as follows [0, 1, 2, 2]. [2025-02-08 13:54:53,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,326 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 13:54:53,330 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 13:54:53,331 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 13:54:53,331 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 13:54:53,331 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (1/1) ... [2025-02-08 13:54:53,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 13:54:53,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 13:54:53,361 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) [2025-02-08 13:54:53,363 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 [2025-02-08 13:54:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 13:54:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 13:54:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 13:54:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 13:54:53,383 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-08 13:54:53,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 13:54:53,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 13:54:53,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 13:54:53,385 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 13:54:53,490 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 13:54:53,492 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 13:54:53,702 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 13:54:53,703 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 13:54:54,029 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 13:54:54,030 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 13:54:54,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:54:54 BoogieIcfgContainer [2025-02-08 13:54:54,031 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 13:54:54,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 13:54:54,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 13:54:54,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 13:54:54,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:54:52" (1/3) ... [2025-02-08 13:54:54,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e1b3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:54:54, skipping insertion in model container [2025-02-08 13:54:54,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:54:53" (2/3) ... [2025-02-08 13:54:54,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e1b3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:54:54, skipping insertion in model container [2025-02-08 13:54:54,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:54:54" (3/3) ... [2025-02-08 13:54:54,038 INFO L128 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2025-02-08 13:54:54,046 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 13:54:54,049 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36_stack_cas_p0_vs_concur.i that has 2 procedures, 32 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-02-08 13:54:54,049 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 13:54:54,110 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:54:54,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 34 transitions, 72 flow [2025-02-08 13:54:54,159 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2025-02-08 13:54:54,163 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:54:54,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 2/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 54 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-02-08 13:54:54,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 34 transitions, 72 flow [2025-02-08 13:54:54,169 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 34 transitions, 72 flow [2025-02-08 13:54:54,178 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:54:54,188 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;@1434971d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:54:54,188 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-08 13:54:54,197 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:54:54,197 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-08 13:54:54,197 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:54:54,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:54,197 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 13:54:54,198 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 13:54:54,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash 59816919, now seen corresponding path program 1 times [2025-02-08 13:54:54,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:54,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77327881] [2025-02-08 13:54:54,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:54,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:54:54,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:54:54,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:54,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:54,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:54,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77327881] [2025-02-08 13:54:54,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77327881] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:54,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:54,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:54:54,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505219859] [2025-02-08 13:54:54,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:54,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:54:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:54,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:54:54,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:54:54,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-08 13:54:54,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-02-08 13:54:54,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:54,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-08 13:54:54,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:54,822 INFO L124 PetriNetUnfolderBase]: 21/80 cut-off events. [2025-02-08 13:54:54,822 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 13:54:54,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 80 events. 21/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 189 event pairs, 2 based on Foata normal form. 3/73 useless extension candidates. Maximal degree in co-relation 125. Up to 44 conditions per place. [2025-02-08 13:54:54,824 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 14 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2025-02-08 13:54:54,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 88 flow [2025-02-08 13:54:54,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:54:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:54:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2025-02-08 13:54:54,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2025-02-08 13:54:54,833 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 72 flow. Second operand 3 states and 56 transitions. [2025-02-08 13:54:54,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 88 flow [2025-02-08 13:54:54,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:54:54,837 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 56 flow [2025-02-08 13:54:54,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2025-02-08 13:54:54,841 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places. [2025-02-08 13:54:54,841 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 56 flow [2025-02-08 13:54:54,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2025-02-08 13:54:54,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:54,841 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 13:54:54,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 13:54:54,842 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-08 13:54:54,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:54,842 INFO L85 PathProgramCache]: Analyzing trace with hash 59814371, now seen corresponding path program 1 times [2025-02-08 13:54:54,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:54,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365005938] [2025-02-08 13:54:54,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:54,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:55,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:54:55,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:54:55,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:55,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:55,081 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:54:55,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:54:55,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:54:55,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:55,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:55,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:54:55,129 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:54:55,130 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-02-08 13:54:55,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-02-08 13:54:55,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-02-08 13:54:55,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-02-08 13:54:55,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 13:54:55,137 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 13:54:55,139 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:54:55,142 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 13:54:55,179 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:54:55,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 63 transitions, 136 flow [2025-02-08 13:54:55,195 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2025-02-08 13:54:55,195 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 13:54:55,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 180 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2025-02-08 13:54:55,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 63 transitions, 136 flow [2025-02-08 13:54:55,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 63 transitions, 136 flow [2025-02-08 13:54:55,198 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:54:55,198 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;@1434971d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:54:55,198 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-02-08 13:54:55,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:54:55,201 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-08 13:54:55,201 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 13:54:55,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:55,201 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 13:54:55,201 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-08 13:54:55,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1924436599, now seen corresponding path program 1 times [2025-02-08 13:54:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:55,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146290970] [2025-02-08 13:54:55,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:55,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:55,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:54:55,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:54:55,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:55,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:55,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:55,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146290970] [2025-02-08 13:54:55,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146290970] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:55,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:55,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:54:55,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447708161] [2025-02-08 13:54:55,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:55,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:54:55,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:55,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:54:55,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:54:55,427 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 63 [2025-02-08 13:54:55,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-02-08 13:54:55,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:55,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 63 [2025-02-08 13:54:55,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:55,687 INFO L124 PetriNetUnfolderBase]: 771/1494 cut-off events. [2025-02-08 13:54:55,687 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-02-08 13:54:55,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2777 conditions, 1494 events. 771/1494 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 8261 event pairs, 306 based on Foata normal form. 81/1251 useless extension candidates. Maximal degree in co-relation 2401. Up to 1216 conditions per place. [2025-02-08 13:54:55,696 INFO L140 encePairwiseOnDemand]: 43/63 looper letters, 35 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2025-02-08 13:54:55,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 205 flow [2025-02-08 13:54:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:54:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:54:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2025-02-08 13:54:55,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6402116402116402 [2025-02-08 13:54:55,697 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 136 flow. Second operand 3 states and 121 transitions. [2025-02-08 13:54:55,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 205 flow [2025-02-08 13:54:55,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 13:54:55,699 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 139 flow [2025-02-08 13:54:55,700 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2025-02-08 13:54:55,700 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2025-02-08 13:54:55,700 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 139 flow [2025-02-08 13:54:55,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2025-02-08 13:54:55,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:55,700 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:55,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 13:54:55,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-08 13:54:55,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1747310721, now seen corresponding path program 1 times [2025-02-08 13:54:55,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:55,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198852604] [2025-02-08 13:54:55,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:55,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 13:54:55,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 13:54:55,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:55,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:56,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198852604] [2025-02-08 13:54:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198852604] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:56,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:56,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:54:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317411662] [2025-02-08 13:54:56,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:56,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:54:56,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:56,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:54:56,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:54:56,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 63 [2025-02-08 13:54:56,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2025-02-08 13:54:56,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:56,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 63 [2025-02-08 13:54:56,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:56,307 INFO L124 PetriNetUnfolderBase]: 891/1740 cut-off events. [2025-02-08 13:54:56,307 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2025-02-08 13:54:56,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3440 conditions, 1740 events. 891/1740 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10012 event pairs, 204 based on Foata normal form. 42/1416 useless extension candidates. Maximal degree in co-relation 3055. Up to 1055 conditions per place. [2025-02-08 13:54:56,316 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 66 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2025-02-08 13:54:56,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 400 flow [2025-02-08 13:54:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:54:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:54:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2025-02-08 13:54:56,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2025-02-08 13:54:56,318 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 139 flow. Second operand 6 states and 181 transitions. [2025-02-08 13:54:56,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 400 flow [2025-02-08 13:54:56,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 397 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:54:56,320 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 196 flow [2025-02-08 13:54:56,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=196, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2025-02-08 13:54:56,321 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2025-02-08 13:54:56,321 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 196 flow [2025-02-08 13:54:56,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2025-02-08 13:54:56,321 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:56,321 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-02-08 13:54:56,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 13:54:56,322 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-08 13:54:56,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:56,322 INFO L85 PathProgramCache]: Analyzing trace with hash 764401281, now seen corresponding path program 1 times [2025-02-08 13:54:56,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:56,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276107229] [2025-02-08 13:54:56,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:56,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:56,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 13:54:56,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 13:54:56,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:56,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:56,536 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:54:56,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 13:54:56,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 13:54:56,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:56,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:54:56,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:54:56,553 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2025-02-08 13:54:56,553 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2025-02-08 13:54:56,554 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2025-02-08 13:54:56,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 13:54:56,554 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-02-08 13:54:56,557 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:54:56,557 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 13:54:56,598 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:54:56,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 92 transitions, 202 flow [2025-02-08 13:54:56,607 INFO L124 PetriNetUnfolderBase]: 6/100 cut-off events. [2025-02-08 13:54:56,607 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-08 13:54:56,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 6/100 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 331 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2025-02-08 13:54:56,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 92 transitions, 202 flow [2025-02-08 13:54:56,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 92 transitions, 202 flow [2025-02-08 13:54:56,609 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:54:56,610 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;@1434971d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:54:56,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-02-08 13:54:56,611 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:54:56,611 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-02-08 13:54:56,611 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 13:54:56,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:56,611 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 13:54:56,614 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 13:54:56,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:56,615 INFO L85 PathProgramCache]: Analyzing trace with hash 351981403, now seen corresponding path program 1 times [2025-02-08 13:54:56,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:56,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549638552] [2025-02-08 13:54:56,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:56,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:56,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:54:56,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:54:56,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:56,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:56,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:56,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549638552] [2025-02-08 13:54:56,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549638552] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:56,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:56,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:54:56,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456589757] [2025-02-08 13:54:56,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:56,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:54:56,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:56,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:54:56,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:54:56,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 92 [2025-02-08 13:54:56,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2025-02-08 13:54:56,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:56,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 92 [2025-02-08 13:54:56,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:54:58,632 INFO L124 PetriNetUnfolderBase]: 17559/27362 cut-off events. [2025-02-08 13:54:58,633 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2025-02-08 13:54:58,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52266 conditions, 27362 events. 17559/27362 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 882. Compared 195011 event pairs, 9437 based on Foata normal form. 1602/22098 useless extension candidates. Maximal degree in co-relation 41749. Up to 24188 conditions per place. [2025-02-08 13:54:58,799 INFO L140 encePairwiseOnDemand]: 63/92 looper letters, 51 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2025-02-08 13:54:58,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 83 transitions, 306 flow [2025-02-08 13:54:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 13:54:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 13:54:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2025-02-08 13:54:58,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2025-02-08 13:54:58,803 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 202 flow. Second operand 3 states and 177 transitions. [2025-02-08 13:54:58,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 83 transitions, 306 flow [2025-02-08 13:54:58,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 302 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-02-08 13:54:58,807 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 204 flow [2025-02-08 13:54:58,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2025-02-08 13:54:58,808 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -13 predicate places. [2025-02-08 13:54:58,809 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 204 flow [2025-02-08 13:54:58,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2025-02-08 13:54:58,809 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:54:58,809 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:54:58,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 13:54:58,809 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 13:54:58,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:54:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1048262941, now seen corresponding path program 1 times [2025-02-08 13:54:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:54:58,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390909560] [2025-02-08 13:54:58,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:54:58,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:54:59,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 13:54:59,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 13:54:59,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:54:59,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:54:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:54:59,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:54:59,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390909560] [2025-02-08 13:54:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390909560] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:54:59,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:54:59,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:54:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478147469] [2025-02-08 13:54:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:54:59,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:54:59,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:54:59,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:54:59,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:54:59,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2025-02-08 13:54:59,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2025-02-08 13:54:59,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:54:59,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2025-02-08 13:54:59,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:55:00,990 INFO L124 PetriNetUnfolderBase]: 21159/33653 cut-off events. [2025-02-08 13:55:00,991 INFO L125 PetriNetUnfolderBase]: For 1775/1775 co-relation queries the response was YES. [2025-02-08 13:55:01,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69506 conditions, 33653 events. 21159/33653 cut-off events. For 1775/1775 co-relation queries the response was YES. Maximal size of possible extension queue 1064. Compared 255616 event pairs, 6899 based on Foata normal form. 549/25834 useless extension candidates. Maximal degree in co-relation 65376. Up to 25851 conditions per place. [2025-02-08 13:55:01,160 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 111 selfloop transitions, 12 changer transitions 0/149 dead transitions. [2025-02-08 13:55:01,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 149 transitions, 679 flow [2025-02-08 13:55:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:55:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:55:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 283 transitions. [2025-02-08 13:55:01,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5126811594202898 [2025-02-08 13:55:01,167 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 204 flow. Second operand 6 states and 283 transitions. [2025-02-08 13:55:01,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 149 transitions, 679 flow [2025-02-08 13:55:01,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 149 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:55:01,170 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 283 flow [2025-02-08 13:55:01,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2025-02-08 13:55:01,171 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2025-02-08 13:55:01,171 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 283 flow [2025-02-08 13:55:01,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2025-02-08 13:55:01,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:55:01,171 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 13:55:01,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 13:55:01,171 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 13:55:01,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:55:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash 43810805, now seen corresponding path program 1 times [2025-02-08 13:55:01,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:55:01,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977058214] [2025-02-08 13:55:01,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:55:01,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:55:01,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 13:55:01,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 13:55:01,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:01,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:55:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:55:01,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:55:01,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977058214] [2025-02-08 13:55:01,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977058214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:55:01,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:55:01,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 13:55:01,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244375491] [2025-02-08 13:55:01,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:55:01,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 13:55:01,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:55:01,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 13:55:01,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 13:55:01,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 92 [2025-02-08 13:55:01,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 283 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2025-02-08 13:55:01,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:55:01,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 92 [2025-02-08 13:55:01,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 13:55:03,870 INFO L124 PetriNetUnfolderBase]: 23616/37445 cut-off events. [2025-02-08 13:55:03,870 INFO L125 PetriNetUnfolderBase]: For 9999/10287 co-relation queries the response was YES. [2025-02-08 13:55:03,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83463 conditions, 37445 events. 23616/37445 cut-off events. For 9999/10287 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 287909 event pairs, 9584 based on Foata normal form. 594/30811 useless extension candidates. Maximal degree in co-relation 78561. Up to 29287 conditions per place. [2025-02-08 13:55:04,046 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 117 selfloop transitions, 12 changer transitions 0/155 dead transitions. [2025-02-08 13:55:04,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 155 transitions, 774 flow [2025-02-08 13:55:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 13:55:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 13:55:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 281 transitions. [2025-02-08 13:55:04,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5090579710144928 [2025-02-08 13:55:04,048 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 283 flow. Second operand 6 states and 281 transitions. [2025-02-08 13:55:04,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 155 transitions, 774 flow [2025-02-08 13:55:04,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 155 transitions, 770 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 13:55:04,063 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 370 flow [2025-02-08 13:55:04,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2025-02-08 13:55:04,064 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 1 predicate places. [2025-02-08 13:55:04,064 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 370 flow [2025-02-08 13:55:04,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 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) [2025-02-08 13:55:04,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:55:04,065 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-02-08 13:55:04,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 13:55:04,066 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-08 13:55:04,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:55:04,066 INFO L85 PathProgramCache]: Analyzing trace with hash -372878942, now seen corresponding path program 1 times [2025-02-08 13:55:04,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:55:04,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515858553] [2025-02-08 13:55:04,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:55:04,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:55:04,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:55:04,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:55:04,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:04,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:55:04,324 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 13:55:04,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 13:55:04,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 13:55:04,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:04,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 13:55:04,342 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 13:55:04,342 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2025-02-08 13:55:04,342 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2025-02-08 13:55:04,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2025-02-08 13:55:04,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2025-02-08 13:55:04,344 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2025-02-08 13:55:04,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2025-02-08 13:55:04,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2025-02-08 13:55:04,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2025-02-08 13:55:04,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 13:55:04,348 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-08 13:55:04,348 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 13:55:04,349 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-08 13:55:04,382 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 13:55:04,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 121 transitions, 270 flow [2025-02-08 13:55:04,390 INFO L124 PetriNetUnfolderBase]: 8/132 cut-off events. [2025-02-08 13:55:04,390 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-08 13:55:04,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 132 events. 8/132 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 502 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 115. Up to 5 conditions per place. [2025-02-08 13:55:04,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 121 transitions, 270 flow [2025-02-08 13:55:04,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 121 transitions, 270 flow [2025-02-08 13:55:04,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 13:55:04,393 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;@1434971d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 13:55:04,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-02-08 13:55:04,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 13:55:04,394 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-08 13:55:04,394 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 13:55:04,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 13:55:04,394 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 13:55:04,394 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-02-08 13:55:04,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 13:55:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash -362525765, now seen corresponding path program 1 times [2025-02-08 13:55:04,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 13:55:04,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814410329] [2025-02-08 13:55:04,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 13:55:04,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 13:55:04,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 13:55:04,528 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 13:55:04,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 13:55:04,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 13:55:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 13:55:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 13:55:04,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814410329] [2025-02-08 13:55:04,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814410329] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 13:55:04,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 13:55:04,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 13:55:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501195719] [2025-02-08 13:55:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 13:55:04,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 13:55:04,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 13:55:04,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 13:55:04,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 13:55:04,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 121 [2025-02-08 13:55:04,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2025-02-08 13:55:04,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 13:55:04,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 121 [2025-02-08 13:55:04,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand