./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 c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:31:54,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:31:54,212 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:31:54,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:31:54,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:31:54,231 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:31:54,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:31:54,232 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:31:54,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:31:54,232 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:31:54,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:31:54,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:31:54,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:31:54,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:31:54,233 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:31:54,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:31:54,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:31:54,233 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:31:54,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:31:54,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:31:54,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:31:54,233 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:31:54,233 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:31:54,233 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:31:54,234 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:31:54,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:54,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:31:54,235 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2025-02-06 18:31:54,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:31:54,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:31:54,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:31:54,465 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:31:54,465 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:31:54,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-02-06 18:31:55,658 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b0022c614/56366040f2434d21a0acb570ee25754d/FLAG2e4a39f01 [2025-02-06 18:31:55,980 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:31:55,980 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2025-02-06 18:31:55,992 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b0022c614/56366040f2434d21a0acb570ee25754d/FLAG2e4a39f01 [2025-02-06 18:31:56,014 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b0022c614/56366040f2434d21a0acb570ee25754d [2025-02-06 18:31:56,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:31:56,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:31:56,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:56,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:31:56,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:31:56,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@714106e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56, skipping insertion in model container [2025-02-06 18:31:56,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,049 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:31:56,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:56,256 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:31:56,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:31:56,310 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:31:56,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56 WrapperNode [2025-02-06 18:31:56,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:31:56,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:56,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:31:56,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:31:56,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,332 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 170 [2025-02-06 18:31:56,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:31:56,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:31:56,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:31:56,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:31:56,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,339 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,346 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]. [2025-02-06 18:31:56,346 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,346 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,349 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:31:56,360 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:31:56,360 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:31:56,360 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:31:56,360 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (1/1) ... [2025-02-06 18:31:56,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:31:56,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:31:56,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:31:56,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:31:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 18:31:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 18:31:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 18:31:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 18:31:56,428 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-06 18:31:56,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 18:31:56,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 18:31:56,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:31:56,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:31:56,430 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:31:56,515 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:31:56,516 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:31:56,756 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:31:56,757 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:31:57,061 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:31:57,062 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:31:57,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:57 BoogieIcfgContainer [2025-02-06 18:31:57,063 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:31:57,064 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:31:57,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:31:57,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:31:57,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:31:56" (1/3) ... [2025-02-06 18:31:57,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d50e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:57, skipping insertion in model container [2025-02-06 18:31:57,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:31:56" (2/3) ... [2025-02-06 18:31:57,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d50e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:31:57, skipping insertion in model container [2025-02-06 18:31:57,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:31:57" (3/3) ... [2025-02-06 18:31:57,071 INFO L128 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2025-02-06 18:31:57,081 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:31:57,082 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 36_stack_cas_p0_vs_concur.i that has 2 procedures, 32 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-02-06 18:31:57,082 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:31:57,129 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:57,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 74 flow [2025-02-06 18:31:57,175 INFO L124 PetriNetUnfolderBase]: 3/37 cut-off events. [2025-02-06 18:31:57,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:57,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 3/37 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. 0/22 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2025-02-06 18:31:57,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 35 transitions, 74 flow [2025-02-06 18:31:57,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 35 transitions, 74 flow [2025-02-06 18:31:57,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:57,200 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;@6e1a0778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:57,200 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-06 18:31:57,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:57,206 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-06 18:31:57,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:57,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:57,206 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:31:57,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:31:57,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash 36758685, now seen corresponding path program 1 times [2025-02-06 18:31:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:57,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059137264] [2025-02-06 18:31:57,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:57,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:57,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:57,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:57,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:57,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:57,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:57,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059137264] [2025-02-06 18:31:57,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059137264] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:57,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:57,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:31:57,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046136349] [2025-02-06 18:31:57,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:57,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:57,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:57,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:57,928 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2025-02-06 18:31:57,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:57,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:57,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2025-02-06 18:31:57,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:58,010 INFO L124 PetriNetUnfolderBase]: 36/113 cut-off events. [2025-02-06 18:31:58,011 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 18:31:58,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 113 events. 36/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 255 event pairs, 2 based on Foata normal form. 3/98 useless extension candidates. Maximal degree in co-relation 191. Up to 77 conditions per place. [2025-02-06 18:31:58,017 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 21 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2025-02-06 18:31:58,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 116 flow [2025-02-06 18:31:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2025-02-06 18:31:58,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2025-02-06 18:31:58,028 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 74 flow. Second operand 3 states and 67 transitions. [2025-02-06 18:31:58,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 116 flow [2025-02-06 18:31:58,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:31:58,033 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 78 flow [2025-02-06 18:31:58,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2025-02-06 18:31:58,037 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2025-02-06 18:31:58,037 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 78 flow [2025-02-06 18:31:58,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:58,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:58,038 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-02-06 18:31:58,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:31:58,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2025-02-06 18:31:58,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash 36755363, now seen corresponding path program 1 times [2025-02-06 18:31:58,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:58,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928531389] [2025-02-06 18:31:58,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:58,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:58,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:58,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:58,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:58,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:58,267 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:31:58,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:58,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:58,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:58,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:58,308 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:31:58,308 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:31:58,309 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-02-06 18:31:58,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2025-02-06 18:31:58,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2025-02-06 18:31:58,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2025-02-06 18:31:58,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2025-02-06 18:31:58,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2025-02-06 18:31:58,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2025-02-06 18:31:58,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2025-02-06 18:31:58,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2025-02-06 18:31:58,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2025-02-06 18:31:58,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2025-02-06 18:31:58,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2025-02-06 18:31:58,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2025-02-06 18:31:58,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2025-02-06 18:31:58,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2025-02-06 18:31:58,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2025-02-06 18:31:58,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2025-02-06 18:31:58,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2025-02-06 18:31:58,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2025-02-06 18:31:58,312 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2025-02-06 18:31:58,313 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2025-02-06 18:31:58,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:31:58,315 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-06 18:31:58,317 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:31:58,317 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-06 18:31:58,353 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:58,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 65 transitions, 140 flow [2025-02-06 18:31:58,366 INFO L124 PetriNetUnfolderBase]: 6/70 cut-off events. [2025-02-06 18:31:58,366 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 18:31:58,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 6/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 187 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2025-02-06 18:31:58,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 65 transitions, 140 flow [2025-02-06 18:31:58,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 65 transitions, 140 flow [2025-02-06 18:31:58,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:58,368 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;@6e1a0778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:58,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-02-06 18:31:58,370 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:58,370 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-06 18:31:58,370 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:31:58,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:58,371 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:31:58,371 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:31:58,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:58,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1960576061, now seen corresponding path program 1 times [2025-02-06 18:31:58,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:58,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955883395] [2025-02-06 18:31:58,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:58,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:31:58,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:31:58,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:58,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:58,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955883395] [2025-02-06 18:31:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955883395] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:58,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:58,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:31:58,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480931714] [2025-02-06 18:31:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:58,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:31:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:58,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:31:58,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:31:58,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2025-02-06 18:31:58,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:58,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:58,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2025-02-06 18:31:58,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:58,967 INFO L124 PetriNetUnfolderBase]: 1282/2263 cut-off events. [2025-02-06 18:31:58,968 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2025-02-06 18:31:58,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4333 conditions, 2263 events. 1282/2263 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 11973 event pairs, 480 based on Foata normal form. 93/1885 useless extension candidates. Maximal degree in co-relation 3759. Up to 1985 conditions per place. [2025-02-06 18:31:58,988 INFO L140 encePairwiseOnDemand]: 45/65 looper letters, 39 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2025-02-06 18:31:58,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 221 flow [2025-02-06 18:31:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:31:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:31:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2025-02-06 18:31:58,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2025-02-06 18:31:58,990 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 140 flow. Second operand 3 states and 125 transitions. [2025-02-06 18:31:58,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 221 flow [2025-02-06 18:31:58,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:31:58,991 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 147 flow [2025-02-06 18:31:58,992 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2025-02-06 18:31:58,992 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2025-02-06 18:31:58,992 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 147 flow [2025-02-06 18:31:58,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:58,993 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:58,993 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:31:58,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:31:58,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:31:58,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:58,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1377026011, now seen corresponding path program 1 times [2025-02-06 18:31:58,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:58,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516798238] [2025-02-06 18:31:58,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:58,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:59,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:31:59,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:31:59,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:59,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:31:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:31:59,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:31:59,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516798238] [2025-02-06 18:31:59,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516798238] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:31:59,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:31:59,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:31:59,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627706903] [2025-02-06 18:31:59,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:31:59,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:31:59,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:31:59,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:31:59,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:31:59,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 65 [2025-02-06 18:31:59,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:59,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:31:59,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 65 [2025-02-06 18:31:59,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:31:59,689 INFO L124 PetriNetUnfolderBase]: 1731/3138 cut-off events. [2025-02-06 18:31:59,691 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2025-02-06 18:31:59,696 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 108. Compared 18086 event pairs, 300 based on Foata normal form. 60/2535 useless extension candidates. Maximal degree in co-relation 5707. Up to 2312 conditions per place. [2025-02-06 18:31:59,709 INFO L140 encePairwiseOnDemand]: 57/65 looper letters, 77 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2025-02-06 18:31:59,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 103 transitions, 452 flow [2025-02-06 18:31:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:31:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:31:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2025-02-06 18:31:59,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49230769230769234 [2025-02-06 18:31:59,711 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 147 flow. Second operand 6 states and 192 transitions. [2025-02-06 18:31:59,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 103 transitions, 452 flow [2025-02-06 18:31:59,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:31:59,713 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 206 flow [2025-02-06 18:31:59,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2025-02-06 18:31:59,713 INFO L279 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2025-02-06 18:31:59,713 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 206 flow [2025-02-06 18:31:59,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:31:59,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:59,714 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-02-06 18:31:59,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:31:59,714 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2025-02-06 18:31:59,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:59,715 INFO L85 PathProgramCache]: Analyzing trace with hash -694287266, now seen corresponding path program 1 times [2025-02-06 18:31:59,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:59,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223747320] [2025-02-06 18:31:59,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:59,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:31:59,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:31:59,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:31:59,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:59,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:59,873 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:31:59,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:31:59,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:31:59,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:31:59,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:31:59,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:31:59,895 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:31:59,895 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2025-02-06 18:31:59,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 31 remaining) [2025-02-06 18:31:59,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2025-02-06 18:31:59,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2025-02-06 18:31:59,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2025-02-06 18:31:59,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2025-02-06 18:31:59,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2025-02-06 18:31:59,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2025-02-06 18:31:59,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2025-02-06 18:31:59,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2025-02-06 18:31:59,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:31:59,898 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-02-06 18:31:59,899 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:31:59,899 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-06 18:31:59,932 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:31:59,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 95 transitions, 208 flow [2025-02-06 18:31:59,942 INFO L124 PetriNetUnfolderBase]: 9/103 cut-off events. [2025-02-06 18:31:59,942 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-06 18:31:59,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 9/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 349 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2025-02-06 18:31:59,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 95 transitions, 208 flow [2025-02-06 18:31:59,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 95 transitions, 208 flow [2025-02-06 18:31:59,944 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:31:59,945 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;@6e1a0778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:31:59,945 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-02-06 18:31:59,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:31:59,947 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-02-06 18:31:59,947 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:31:59,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:31:59,947 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:31:59,947 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-06 18:31:59,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:31:59,947 INFO L85 PathProgramCache]: Analyzing trace with hash 476901024, now seen corresponding path program 1 times [2025-02-06 18:31:59,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:31:59,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537769316] [2025-02-06 18:31:59,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:31:59,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:32:00,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:32:00,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:32:00,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:32:00,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:32:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:32:00,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:32:00,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537769316] [2025-02-06 18:32:00,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537769316] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:32:00,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:32:00,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:32:00,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356535896] [2025-02-06 18:32:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:32:00,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:32:00,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:32:00,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:32:00,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:32:00,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 95 [2025-02-06 18:32:00,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:32:00,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:32:00,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 95 [2025-02-06 18:32:00,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:32:02,771 INFO L124 PetriNetUnfolderBase]: 30591/44558 cut-off events. [2025-02-06 18:32:02,772 INFO L125 PetriNetUnfolderBase]: For 1424/1424 co-relation queries the response was YES. [2025-02-06 18:32:02,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86996 conditions, 44558 events. 30591/44558 cut-off events. For 1424/1424 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 292065 event pairs, 15869 based on Foata normal form. 2118/36972 useless extension candidates. Maximal degree in co-relation 70701. Up to 41384 conditions per place. [2025-02-06 18:32:03,004 INFO L140 encePairwiseOnDemand]: 66/95 looper letters, 57 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2025-02-06 18:32:03,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 330 flow [2025-02-06 18:32:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 18:32:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 18:32:03,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2025-02-06 18:32:03,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6421052631578947 [2025-02-06 18:32:03,009 INFO L175 Difference]: Start difference. First operand has 93 places, 95 transitions, 208 flow. Second operand 3 states and 183 transitions. [2025-02-06 18:32:03,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 330 flow [2025-02-06 18:32:03,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 326 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-02-06 18:32:03,012 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 216 flow [2025-02-06 18:32:03,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2025-02-06 18:32:03,015 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -10 predicate places. [2025-02-06 18:32:03,015 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 216 flow [2025-02-06 18:32:03,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:32:03,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:32:03,016 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:32:03,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:32:03,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-06 18:32:03,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:32:03,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1259591256, now seen corresponding path program 1 times [2025-02-06 18:32:03,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:32:03,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521588134] [2025-02-06 18:32:03,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:32:03,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:32:03,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 18:32:03,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 18:32:03,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:32:03,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:32:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:32:03,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:32:03,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521588134] [2025-02-06 18:32:03,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521588134] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:32:03,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:32:03,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:32:03,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437789631] [2025-02-06 18:32:03,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:32:03,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:32:03,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:32:03,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:32:03,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:32:03,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 95 [2025-02-06 18:32:03,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:32:03,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:32:03,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 95 [2025-02-06 18:32:03,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:32:06,608 INFO L124 PetriNetUnfolderBase]: 38256/56915 cut-off events. [2025-02-06 18:32:06,609 INFO L125 PetriNetUnfolderBase]: For 3080/3080 co-relation queries the response was YES. [2025-02-06 18:32:06,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120482 conditions, 56915 events. 38256/56915 cut-off events. For 3080/3080 co-relation queries the response was YES. Maximal size of possible extension queue 1441. Compared 404767 event pairs, 11699 based on Foata normal form. 807/44929 useless extension candidates. Maximal degree in co-relation 113833. Up to 47786 conditions per place. [2025-02-06 18:32:06,896 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 121 selfloop transitions, 12 changer transitions 0/159 dead transitions. [2025-02-06 18:32:06,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 159 transitions, 719 flow [2025-02-06 18:32:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:32:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:32:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 293 transitions. [2025-02-06 18:32:06,901 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5140350877192983 [2025-02-06 18:32:06,901 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 216 flow. Second operand 6 states and 293 transitions. [2025-02-06 18:32:06,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 159 transitions, 719 flow [2025-02-06 18:32:06,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 159 transitions, 715 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:32:06,904 INFO L231 Difference]: Finished difference. Result has 90 places, 90 transitions, 295 flow [2025-02-06 18:32:06,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=90, PETRI_TRANSITIONS=90} [2025-02-06 18:32:06,905 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -3 predicate places. [2025-02-06 18:32:06,905 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 90 transitions, 295 flow [2025-02-06 18:32:06,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:32:06,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:32:06,905 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:32:06,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:32:06,906 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-06 18:32:06,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:32:06,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1794150876, now seen corresponding path program 1 times [2025-02-06 18:32:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:32:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302515074] [2025-02-06 18:32:06,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:32:06,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:32:07,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:32:07,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:32:07,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:32:07,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:32:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:32:07,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:32:07,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302515074] [2025-02-06 18:32:07,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302515074] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:32:07,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:32:07,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:32:07,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702555826] [2025-02-06 18:32:07,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:32:07,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:32:07,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:32:07,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:32:07,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:32:07,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 95 [2025-02-06 18:32:07,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 90 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:32:07,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:32:07,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 95 [2025-02-06 18:32:07,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:32:11,375 INFO L124 PetriNetUnfolderBase]: 44416/66330 cut-off events. [2025-02-06 18:32:11,375 INFO L125 PetriNetUnfolderBase]: For 17958/18084 co-relation queries the response was YES. [2025-02-06 18:32:11,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150839 conditions, 66330 events. 44416/66330 cut-off events. For 17958/18084 co-relation queries the response was YES. Maximal size of possible extension queue 1675. Compared 484512 event pairs, 17942 based on Foata normal form. 864/55550 useless extension candidates. Maximal degree in co-relation 141590. Up to 56417 conditions per place. [2025-02-06 18:32:11,666 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 127 selfloop transitions, 12 changer transitions 0/165 dead transitions. [2025-02-06 18:32:11,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 165 transitions, 814 flow [2025-02-06 18:32:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:32:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:32:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 291 transitions. [2025-02-06 18:32:11,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2025-02-06 18:32:11,668 INFO L175 Difference]: Start difference. First operand has 90 places, 90 transitions, 295 flow. Second operand 6 states and 291 transitions. [2025-02-06 18:32:11,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 165 transitions, 814 flow [2025-02-06 18:32:11,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 165 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:32:11,685 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 382 flow [2025-02-06 18:32:11,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2025-02-06 18:32:11,686 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 4 predicate places. [2025-02-06 18:32:11,686 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 382 flow [2025-02-06 18:32:11,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:32:11,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:32:11,686 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2025-02-06 18:32:11,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:32:11,687 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2025-02-06 18:32:11,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:32:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2029077918, now seen corresponding path program 1 times [2025-02-06 18:32:11,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:32:11,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041666262] [2025-02-06 18:32:11,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:32:11,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:32:11,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:32:11,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:32:11,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:32:11,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:32:11,828 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:32:11,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:32:11,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:32:11,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:32:11,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:32:11,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:32:11,841 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 18:32:11,841 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2025-02-06 18:32:11,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2025-02-06 18:32:11,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2025-02-06 18:32:11,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2025-02-06 18:32:11,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2025-02-06 18:32:11,841 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2025-02-06 18:32:11,842 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2025-02-06 18:32:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2025-02-06 18:32:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2025-02-06 18:32:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2025-02-06 18:32:11,846 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2025-02-06 18:32:11,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:32:11,846 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-06 18:32:11,847 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-06 18:32:11,847 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-06 18:32:11,897 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 18:32:11,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 125 transitions, 278 flow [2025-02-06 18:32:11,908 INFO L124 PetriNetUnfolderBase]: 12/136 cut-off events. [2025-02-06 18:32:11,908 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-06 18:32:11,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 136 events. 12/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 525 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2025-02-06 18:32:11,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 125 transitions, 278 flow [2025-02-06 18:32:11,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 125 transitions, 278 flow [2025-02-06 18:32:11,915 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:32:11,915 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;@6e1a0778, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:32:11,915 INFO L334 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2025-02-06 18:32:11,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:32:11,916 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-06 18:32:11,916 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:32:11,916 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:32:11,916 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:32:11,916 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2025-02-06 18:32:11,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:32:11,917 INFO L85 PathProgramCache]: Analyzing trace with hash -119241536, now seen corresponding path program 1 times [2025-02-06 18:32:11,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:32:11,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460132382] [2025-02-06 18:32:11,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:32:11,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:32:12,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:32:12,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:32:12,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:32:12,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:32:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:32:12,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:32:12,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460132382] [2025-02-06 18:32:12,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460132382] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:32:12,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:32:12,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 18:32:12,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783370666] [2025-02-06 18:32:12,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:32:12,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 18:32:12,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:32:12,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 18:32:12,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 18:32:12,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 125 [2025-02-06 18:32:12,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 125 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:32:12,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:32:12,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 125 [2025-02-06 18:32:12,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand