./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! 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-?-8fc3dc6-m [2025-03-17 19:26:16,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:26:16,724 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:26:16,730 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:26:16,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:26:16,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:26:16,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:26:16,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:26:16,751 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:26:16,752 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:26:16,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:26:16,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:26:16,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:26:16,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:26:16,753 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:26:16,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:26:16,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:26:16,754 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:26:16,755 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:26:16,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:26:16,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:26:16,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:26:16,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:26:16,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:26:16,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:26:16,755 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:26:16,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:26:16,756 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:26:16,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:26:16,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:26:16,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:26:16,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:26:16,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:26:16,756 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 [2025-03-17 19:26:17,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:26:17,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:26:17,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:26:17,043 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:26:17,043 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:26:17,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-03-17 19:26:18,188 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cca7b0c4/1213a27fae2843e0956fd9667d73f1bd/FLAG4bf6d85c2 [2025-03-17 19:26:18,432 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:26:18,433 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-03-17 19:26:18,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cca7b0c4/1213a27fae2843e0956fd9667d73f1bd/FLAG4bf6d85c2 [2025-03-17 19:26:18,760 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cca7b0c4/1213a27fae2843e0956fd9667d73f1bd [2025-03-17 19:26:18,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:26:18,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:26:18,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:26:18,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:26:18,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:26:18,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:26:18" (1/1) ... [2025-03-17 19:26:18,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdf414e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:18, skipping insertion in model container [2025-03-17 19:26:18,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:26:18" (1/1) ... [2025-03-17 19:26:18,796 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:26:19,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:26:19,059 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:26:19,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:26:19,118 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:26:19,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19 WrapperNode [2025-03-17 19:26:19,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:26:19,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:26:19,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:26:19,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:26:19,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,150 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 170 [2025-03-17 19:26:19,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:26:19,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:26:19,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:26:19,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:26:19,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,164 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,183 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 5, 6, 3]. 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]. [2025-03-17 19:26:19,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,187 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,195 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:26:19,201 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:26:19,201 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:26:19,201 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:26:19,202 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (1/1) ... [2025-03-17 19:26:19,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:26:19,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:26:19,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:26:19,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:26:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:26:19,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 19:26:19,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:26:19,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:26:19,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:26:19,243 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:26:19,337 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:26:19,338 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:26:19,572 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:26:19,572 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:26:19,855 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:26:19,855 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:26:19,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:26:19 BoogieIcfgContainer [2025-03-17 19:26:19,855 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:26:19,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:26:19,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:26:19,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:26:19,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:26:18" (1/3) ... [2025-03-17 19:26:19,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d1af33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:26:19, skipping insertion in model container [2025-03-17 19:26:19,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:26:19" (2/3) ... [2025-03-17 19:26:19,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d1af33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:26:19, skipping insertion in model container [2025-03-17 19:26:19,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:26:19" (3/3) ... [2025-03-17 19:26:19,862 INFO L128 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2025-03-17 19:26:19,871 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:26:19,874 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36_stack_cas_p0_vs_concur.i that has 2 procedures, 31 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-03-17 19:26:19,874 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:26:19,935 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:26:19,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 34 transitions, 72 flow [2025-03-17 19:26:19,987 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2025-03-17 19:26:19,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:26:19,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 58 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. [2025-03-17 19:26:19,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 34 transitions, 72 flow [2025-03-17 19:26:19,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 34 transitions, 72 flow [2025-03-17 19:26:20,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:26:20,020 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;@1c2f07c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:26:20,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-17 19:26:20,028 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:26:20,029 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:26:20,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:26:20,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:20,030 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:26:20,030 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-17 19:26:20,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash 30202679, now seen corresponding path program 1 times [2025-03-17 19:26:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:20,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206626783] [2025-03-17 19:26:20,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:20,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:20,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:26:20,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:26:20,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:20,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:26:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:26:20,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:26:20,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206626783] [2025-03-17 19:26:20,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206626783] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:26:20,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:26:20,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:26:20,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816969738] [2025-03-17 19:26:20,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:26:20,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:26:20,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:26:20,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:26:20,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:26:20,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 34 [2025-03-17 19:26:20,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:20,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:26:20,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 34 [2025-03-17 19:26:20,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:26:20,681 INFO L124 PetriNetUnfolderBase]: 36/110 cut-off events. [2025-03-17 19:26:20,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:26:20,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 110 events. 36/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 247 event pairs, 2 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 188. Up to 77 conditions per place. [2025-03-17 19:26:20,684 INFO L140 encePairwiseOnDemand]: 23/34 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2025-03-17 19:26:20,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 114 flow [2025-03-17 19:26:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:26:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:26:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2025-03-17 19:26:20,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2025-03-17 19:26:20,696 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 72 flow. Second operand 3 states and 64 transitions. [2025-03-17 19:26:20,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 114 flow [2025-03-17 19:26:20,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:26:20,702 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 76 flow [2025-03-17 19:26:20,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2025-03-17 19:26:20,708 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2025-03-17 19:26:20,709 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 76 flow [2025-03-17 19:26:20,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:20,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:20,709 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:26:20,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:26:20,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-03-17 19:26:20,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:20,710 INFO L85 PathProgramCache]: Analyzing trace with hash 30200162, now seen corresponding path program 1 times [2025-03-17 19:26:20,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:20,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834769923] [2025-03-17 19:26:20,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:20,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:20,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:26:20,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:26:20,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:20,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:26:20,989 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:26:20,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:26:21,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:26:21,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:21,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:26:21,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:26:21,028 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:26:21,029 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-03-17 19:26:21,030 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-03-17 19:26:21,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-03-17 19:26:21,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-03-17 19:26:21,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-03-17 19:26:21,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-03-17 19:26:21,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-03-17 19:26:21,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-03-17 19:26:21,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-03-17 19:26:21,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-03-17 19:26:21,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-03-17 19:26:21,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-03-17 19:26:21,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:26:21,035 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 19:26:21,037 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:26:21,038 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:26:21,070 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:26:21,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 63 transitions, 136 flow [2025-03-17 19:26:21,090 INFO L124 PetriNetUnfolderBase]: 6/68 cut-off events. [2025-03-17 19:26:21,091 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:26:21,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 6/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 193 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. [2025-03-17 19:26:21,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 63 transitions, 136 flow [2025-03-17 19:26:21,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 63 transitions, 136 flow [2025-03-17 19:26:21,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:26:21,095 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;@1c2f07c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:26:21,095 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-03-17 19:26:21,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:26:21,098 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:26:21,098 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:26:21,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:21,098 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:26:21,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 19:26:21,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:21,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1894822359, now seen corresponding path program 1 times [2025-03-17 19:26:21,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:21,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021584233] [2025-03-17 19:26:21,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:21,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:21,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:26:21,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:26:21,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:21,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:26:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:26:21,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:26:21,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021584233] [2025-03-17 19:26:21,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021584233] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:26:21,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:26:21,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:26:21,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578723469] [2025-03-17 19:26:21,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:26:21,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:26:21,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:26:21,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:26:21,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:26:21,359 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 63 [2025-03-17 19:26:21,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:21,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:26:21,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 63 [2025-03-17 19:26:21,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:26:21,665 INFO L124 PetriNetUnfolderBase]: 1282/2269 cut-off events. [2025-03-17 19:26:21,666 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2025-03-17 19:26:21,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 2269 events. 1282/2269 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 11947 event pairs, 480 based on Foata normal form. 0/1807 useless extension candidates. Maximal degree in co-relation 3771. Up to 1985 conditions per place. [2025-03-17 19:26:21,678 INFO L140 encePairwiseOnDemand]: 43/63 looper letters, 39 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2025-03-17 19:26:21,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 217 flow [2025-03-17 19:26:21,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:26:21,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:26:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2025-03-17 19:26:21,680 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-03-17 19:26:21,680 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 136 flow. Second operand 3 states and 119 transitions. [2025-03-17 19:26:21,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 217 flow [2025-03-17 19:26:21,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:26:21,682 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 143 flow [2025-03-17 19:26:21,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2025-03-17 19:26:21,683 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2025-03-17 19:26:21,683 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 143 flow [2025-03-17 19:26:21,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:21,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:21,683 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:26:21,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:26:21,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 19:26:21,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:21,684 INFO L85 PathProgramCache]: Analyzing trace with hash -141824353, now seen corresponding path program 1 times [2025-03-17 19:26:21,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:21,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820434153] [2025-03-17 19:26:21,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:21,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:21,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:26:21,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:26:21,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:21,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:26:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:26:22,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:26:22,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820434153] [2025-03-17 19:26:22,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820434153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:26:22,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:26:22,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:26:22,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177990414] [2025-03-17 19:26:22,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:26:22,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:26:22,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:26:22,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:26:22,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:26:22,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 63 [2025-03-17 19:26:22,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:22,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:26:22,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 63 [2025-03-17 19:26:22,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:26:22,452 INFO L124 PetriNetUnfolderBase]: 1731/3138 cut-off events. [2025-03-17 19:26:22,452 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2025-03-17 19:26:22,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 3138 events. 1731/3138 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 18097 event pairs, 300 based on Foata normal form. 60/2544 useless extension candidates. Maximal degree in co-relation 5716. Up to 2312 conditions per place. [2025-03-17 19:26:22,470 INFO L140 encePairwiseOnDemand]: 55/63 looper letters, 77 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2025-03-17 19:26:22,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 101 transitions, 448 flow [2025-03-17 19:26:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:26:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:26:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2025-03-17 19:26:22,472 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-03-17 19:26:22,472 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 143 flow. Second operand 6 states and 180 transitions. [2025-03-17 19:26:22,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 101 transitions, 448 flow [2025-03-17 19:26:22,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:26:22,478 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 202 flow [2025-03-17 19:26:22,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2025-03-17 19:26:22,478 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2025-03-17 19:26:22,479 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 202 flow [2025-03-17 19:26:22,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:22,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:22,479 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-03-17 19:26:22,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:26:22,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-03-17 19:26:22,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1004205313, now seen corresponding path program 1 times [2025-03-17 19:26:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:22,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994779242] [2025-03-17 19:26:22,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:22,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:26:22,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:26:22,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:22,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:26:22,651 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:26:22,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:26:22,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:26:22,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:22,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:26:22,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:26:22,662 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:26:22,662 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2025-03-17 19:26:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2025-03-17 19:26:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2025-03-17 19:26:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2025-03-17 19:26:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2025-03-17 19:26:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2025-03-17 19:26:22,662 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2025-03-17 19:26:22,663 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2025-03-17 19:26:22,664 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2025-03-17 19:26:22,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:26:22,665 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-17 19:26:22,665 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:26:22,665 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 19:26:22,706 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:26:22,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 92 transitions, 202 flow [2025-03-17 19:26:22,716 INFO L124 PetriNetUnfolderBase]: 9/100 cut-off events. [2025-03-17 19:26:22,716 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 19:26:22,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 100 events. 9/100 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 343 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. [2025-03-17 19:26:22,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 92 transitions, 202 flow [2025-03-17 19:26:22,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 92 transitions, 202 flow [2025-03-17 19:26:22,718 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:26:22,718 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;@1c2f07c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:26:22,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-03-17 19:26:22,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:26:22,720 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-03-17 19:26:22,720 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:26:22,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:22,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:26:22,720 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-03-17 19:26:22,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash 322367163, now seen corresponding path program 1 times [2025-03-17 19:26:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885621478] [2025-03-17 19:26:22,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:22,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:26:22,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:26:22,874 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:22,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:26:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:26:22,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:26:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885621478] [2025-03-17 19:26:22,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885621478] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:26:22,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:26:22,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:26:22,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289097395] [2025-03-17 19:26:22,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:26:22,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:26:22,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:26:22,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:26:22,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:26:22,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 92 [2025-03-17 19:26:22,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 92 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:22,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:26:22,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 92 [2025-03-17 19:26:22,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:26:25,615 INFO L124 PetriNetUnfolderBase]: 30591/44612 cut-off events. [2025-03-17 19:26:25,616 INFO L125 PetriNetUnfolderBase]: For 1424/1424 co-relation queries the response was YES. [2025-03-17 19:26:25,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87050 conditions, 44612 events. 30591/44612 cut-off events. For 1424/1424 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 290023 event pairs, 15869 based on Foata normal form. 0/34921 useless extension candidates. Maximal degree in co-relation 70785. Up to 41384 conditions per place. [2025-03-17 19:26:25,861 INFO L140 encePairwiseOnDemand]: 63/92 looper letters, 57 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2025-03-17 19:26:25,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 86 transitions, 324 flow [2025-03-17 19:26:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:26:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:26:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2025-03-17 19:26:25,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2025-03-17 19:26:25,864 INFO L175 Difference]: Start difference. First operand has 90 places, 92 transitions, 202 flow. Second operand 3 states and 174 transitions. [2025-03-17 19:26:25,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 86 transitions, 324 flow [2025-03-17 19:26:25,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 320 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-17 19:26:25,867 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 210 flow [2025-03-17 19:26:25,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2025-03-17 19:26:25,867 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -10 predicate places. [2025-03-17 19:26:25,867 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 210 flow [2025-03-17 19:26:25,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:25,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:25,868 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:26:25,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:26:25,868 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-03-17 19:26:25,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:25,869 INFO L85 PathProgramCache]: Analyzing trace with hash 557223427, now seen corresponding path program 1 times [2025-03-17 19:26:25,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:25,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656408506] [2025-03-17 19:26:25,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:25,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:26,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:26:26,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:26:26,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:26,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:26:26,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:26:26,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:26:26,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656408506] [2025-03-17 19:26:26,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656408506] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:26:26,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:26:26,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:26:26,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388555413] [2025-03-17 19:26:26,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:26:26,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:26:26,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:26:26,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:26:26,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:26:26,199 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2025-03-17 19:26:26,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:26,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:26:26,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2025-03-17 19:26:26,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:26:29,151 INFO L124 PetriNetUnfolderBase]: 38256/56843 cut-off events. [2025-03-17 19:26:29,151 INFO L125 PetriNetUnfolderBase]: For 3107/3107 co-relation queries the response was YES. [2025-03-17 19:26:29,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120410 conditions, 56843 events. 38256/56843 cut-off events. For 3107/3107 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 400386 event pairs, 11699 based on Foata normal form. 807/44960 useless extension candidates. Maximal degree in co-relation 113761. Up to 47786 conditions per place. [2025-03-17 19:26:29,460 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 121 selfloop transitions, 12 changer transitions 0/156 dead transitions. [2025-03-17 19:26:29,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 156 transitions, 713 flow [2025-03-17 19:26:29,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:26:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:26:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2025-03-17 19:26:29,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49818840579710144 [2025-03-17 19:26:29,462 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 210 flow. Second operand 6 states and 275 transitions. [2025-03-17 19:26:29,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 156 transitions, 713 flow [2025-03-17 19:26:29,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 709 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:26:29,465 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 289 flow [2025-03-17 19:26:29,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2025-03-17 19:26:29,466 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, -3 predicate places. [2025-03-17 19:26:29,466 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 289 flow [2025-03-17 19:26:29,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:29,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:29,466 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:26:29,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:26:29,467 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-03-17 19:26:29,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1219893332, now seen corresponding path program 1 times [2025-03-17 19:26:29,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:29,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313006223] [2025-03-17 19:26:29,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:29,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:29,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:26:29,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:26:29,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:29,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:26:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:26:29,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:26:29,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313006223] [2025-03-17 19:26:29,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313006223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:26:29,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:26:29,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:26:29,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476235836] [2025-03-17 19:26:29,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:26:29,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:26:29,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:26:29,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:26:29,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:26:29,919 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 92 [2025-03-17 19:26:29,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:29,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:26:29,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 92 [2025-03-17 19:26:29,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:26:33,799 INFO L124 PetriNetUnfolderBase]: 44552/66835 cut-off events. [2025-03-17 19:26:33,799 INFO L125 PetriNetUnfolderBase]: For 18081/18171 co-relation queries the response was YES. [2025-03-17 19:26:33,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151492 conditions, 66835 events. 44552/66835 cut-off events. For 18081/18171 co-relation queries the response was YES. Maximal size of possible extension queue 1676. Compared 489448 event pairs, 18002 based on Foata normal form. 864/56065 useless extension candidates. Maximal degree in co-relation 142282. Up to 56613 conditions per place. [2025-03-17 19:26:34,190 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 127 selfloop transitions, 12 changer transitions 0/162 dead transitions. [2025-03-17 19:26:34,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 162 transitions, 808 flow [2025-03-17 19:26:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:26:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:26:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2025-03-17 19:26:34,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2025-03-17 19:26:34,192 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 289 flow. Second operand 6 states and 273 transitions. [2025-03-17 19:26:34,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 162 transitions, 808 flow [2025-03-17 19:26:34,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 162 transitions, 804 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:26:34,211 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 376 flow [2025-03-17 19:26:34,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2025-03-17 19:26:34,212 INFO L279 CegarLoopForPetriNet]: 90 programPoint places, 4 predicate places. [2025-03-17 19:26:34,212 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 376 flow [2025-03-17 19:26:34,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:34,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:34,212 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-03-17 19:26:34,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:26:34,212 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-03-17 19:26:34,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:34,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1726864577, now seen corresponding path program 1 times [2025-03-17 19:26:34,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:34,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436031021] [2025-03-17 19:26:34,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:34,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:34,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:26:34,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:26:34,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:34,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:26:34,583 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:26:34,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:26:34,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:26:34,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:34,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:26:34,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:26:34,595 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:26:34,595 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2025-03-17 19:26:34,595 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2025-03-17 19:26:34,596 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2025-03-17 19:26:34,597 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2025-03-17 19:26:34,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2025-03-17 19:26:34,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:26:34,599 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-17 19:26:34,599 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:26:34,599 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-17 19:26:34,646 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:26:34,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 121 transitions, 270 flow [2025-03-17 19:26:34,663 INFO L124 PetriNetUnfolderBase]: 12/132 cut-off events. [2025-03-17 19:26:34,663 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 19:26:34,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 132 events. 12/132 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 519 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. [2025-03-17 19:26:34,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 121 transitions, 270 flow [2025-03-17 19:26:34,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 121 transitions, 270 flow [2025-03-17 19:26:34,667 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:26:34,668 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;@1c2f07c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:26:34,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-03-17 19:26:34,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:26:34,671 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:26:34,671 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:26:34,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:26:34,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:26:34,671 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-03-17 19:26:34,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:26:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash -392140005, now seen corresponding path program 1 times [2025-03-17 19:26:34,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:26:34,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394438283] [2025-03-17 19:26:34,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:26:34,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:26:34,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:26:34,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:26:34,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:26:34,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:26:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:26:34,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:26:34,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394438283] [2025-03-17 19:26:34,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394438283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:26:34,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:26:34,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:26:34,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163240314] [2025-03-17 19:26:34,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:26:34,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:26:34,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:26:34,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:26:34,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:26:34,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 121 [2025-03-17 19:26:34,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 121 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:26:34,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:26:34,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 121 [2025-03-17 19:26:34,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand