./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:40:59,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:40:59,088 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:40:59,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:40:59,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:40:59,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:40:59,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:40:59,124 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:40:59,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:40:59,125 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:40:59,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:40:59,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:40:59,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:40:59,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:40:59,126 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:40:59,127 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:40:59,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:40:59,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:40:59,128 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2025-03-09 06:40:59,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:40:59,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:40:59,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:40:59,389 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:40:59,389 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:40:59,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-03-09 06:41:00,634 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19d08013f/929c5717676e4154b6005dbf52d5fe9c/FLAGd5bf11054 [2025-03-09 06:41:00,892 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:41:00,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-03-09 06:41:00,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19d08013f/929c5717676e4154b6005dbf52d5fe9c/FLAGd5bf11054 [2025-03-09 06:41:00,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19d08013f/929c5717676e4154b6005dbf52d5fe9c [2025-03-09 06:41:00,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:41:00,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:41:00,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:00,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:41:00,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:41:00,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:00" (1/1) ... [2025-03-09 06:41:00,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be404a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:00, skipping insertion in model container [2025-03-09 06:41:00,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:41:00" (1/1) ... [2025-03-09 06:41:00,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:41:01,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:01,117 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:41:01,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:41:01,176 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:41:01,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01 WrapperNode [2025-03-09 06:41:01,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:41:01,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:01,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:41:01,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:41:01,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,232 INFO L138 Inliner]: procedures = 25, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 479 [2025-03-09 06:41:01,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:41:01,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:41:01,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:41:01,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:41:01,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,276 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-03-09 06:41:01,276 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,276 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,286 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:41:01,297 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:41:01,297 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:41:01,297 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:41:01,298 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (1/1) ... [2025-03-09 06:41:01,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:41:01,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:01,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:41:01,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:41:01,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:41:01,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:41:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:41:01,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:41:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:41:01,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:41:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-09 06:41:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:41:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:41:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:41:01,357 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:41:01,459 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:41:01,461 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:41:02,069 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:41:02,069 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:41:02,452 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:41:02,452 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:41:02,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:02 BoogieIcfgContainer [2025-03-09 06:41:02,453 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:41:02,455 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:41:02,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:41:02,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:41:02,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:41:00" (1/3) ... [2025-03-09 06:41:02,460 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61df82f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:02, skipping insertion in model container [2025-03-09 06:41:02,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:41:01" (2/3) ... [2025-03-09 06:41:02,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61df82f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:41:02, skipping insertion in model container [2025-03-09 06:41:02,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:41:02" (3/3) ... [2025-03-09 06:41:02,462 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2025-03-09 06:41:02,476 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:41:02,477 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-2.wvr-bad.c that has 5 procedures, 99 locations, 1 initial locations, 8 loop locations, and 32 error locations. [2025-03-09 06:41:02,478 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:41:02,563 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-09 06:41:02,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 122 transitions, 272 flow [2025-03-09 06:41:02,633 INFO L124 PetriNetUnfolderBase]: 24/118 cut-off events. [2025-03-09 06:41:02,637 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 06:41:02,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 118 events. 24/118 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 400 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 102. Up to 8 conditions per place. [2025-03-09 06:41:02,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 122 transitions, 272 flow [2025-03-09 06:41:02,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 116 transitions, 253 flow [2025-03-09 06:41:02,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:41:02,668 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1495adae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:41:02,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-03-09 06:41:02,673 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:41:02,673 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:41:02,673 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:41:02,673 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:02,675 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:41:02,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:41:02,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:02,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1322049, now seen corresponding path program 1 times [2025-03-09 06:41:02,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:02,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475355290] [2025-03-09 06:41:02,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:02,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:02,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:41:02,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:41:02,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:02,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:02,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475355290] [2025-03-09 06:41:02,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475355290] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:02,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:02,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:41:02,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899933538] [2025-03-09 06:41:02,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:02,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:41:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:02,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:41:02,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:41:02,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2025-03-09 06:41:02,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 116 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:02,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:02,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2025-03-09 06:41:02,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:06,759 INFO L124 PetriNetUnfolderBase]: 40188/53468 cut-off events. [2025-03-09 06:41:06,759 INFO L125 PetriNetUnfolderBase]: For 1465/1465 co-relation queries the response was YES. [2025-03-09 06:41:06,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103197 conditions, 53468 events. 40188/53468 cut-off events. For 1465/1465 co-relation queries the response was YES. Maximal size of possible extension queue 3602. Compared 345290 event pairs, 26584 based on Foata normal form. 4/33216 useless extension candidates. Maximal degree in co-relation 99324. Up to 48058 conditions per place. [2025-03-09 06:41:07,190 INFO L140 encePairwiseOnDemand]: 85/122 looper letters, 71 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2025-03-09 06:41:07,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 112 transitions, 413 flow [2025-03-09 06:41:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:41:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:41:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2025-03-09 06:41:07,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48360655737704916 [2025-03-09 06:41:07,208 INFO L175 Difference]: Start difference. First operand has 105 places, 116 transitions, 253 flow. Second operand 4 states and 236 transitions. [2025-03-09 06:41:07,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 112 transitions, 413 flow [2025-03-09 06:41:07,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 112 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-09 06:41:07,260 INFO L231 Difference]: Finished difference. Result has 92 places, 112 transitions, 324 flow [2025-03-09 06:41:07,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=92, PETRI_TRANSITIONS=112} [2025-03-09 06:41:07,266 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -13 predicate places. [2025-03-09 06:41:07,267 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 112 transitions, 324 flow [2025-03-09 06:41:07,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:07,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:07,267 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:41:07,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:41:07,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:41:07,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash 731676278, now seen corresponding path program 1 times [2025-03-09 06:41:07,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:07,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273213864] [2025-03-09 06:41:07,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:07,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:07,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:41:07,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:41:07,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:07,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:07,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:07,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273213864] [2025-03-09 06:41:07,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273213864] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:07,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198924244] [2025-03-09 06:41:07,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:07,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:07,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:07,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:07,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:41:07,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:41:07,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:41:07,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:07,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:07,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:07,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:07,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:41:07,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198924244] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:07,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:41:07,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:41:07,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488037108] [2025-03-09 06:41:07,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:07,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:41:07,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:07,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:41:07,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:41:07,582 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2025-03-09 06:41:07,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 112 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:07,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:07,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2025-03-09 06:41:07,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:10,762 INFO L124 PetriNetUnfolderBase]: 40188/53464 cut-off events. [2025-03-09 06:41:10,762 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2025-03-09 06:41:10,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102742 conditions, 53464 events. 40188/53464 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 3602. Compared 345225 event pairs, 26584 based on Foata normal form. 4/33219 useless extension candidates. Maximal degree in co-relation 102646. Up to 48038 conditions per place. [2025-03-09 06:41:11,119 INFO L140 encePairwiseOnDemand]: 105/122 looper letters, 58 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2025-03-09 06:41:11,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 108 transitions, 468 flow [2025-03-09 06:41:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:41:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:41:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 276 transitions. [2025-03-09 06:41:11,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3770491803278688 [2025-03-09 06:41:11,122 INFO L175 Difference]: Start difference. First operand has 92 places, 112 transitions, 324 flow. Second operand 6 states and 276 transitions. [2025-03-09 06:41:11,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 108 transitions, 468 flow [2025-03-09 06:41:11,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 108 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:41:11,124 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 352 flow [2025-03-09 06:41:11,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2025-03-09 06:41:11,125 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -12 predicate places. [2025-03-09 06:41:11,125 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 352 flow [2025-03-09 06:41:11,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:11,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:11,125 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:41:11,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:41:11,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:11,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:41:11,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:11,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1207129365, now seen corresponding path program 1 times [2025-03-09 06:41:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:11,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598317720] [2025-03-09 06:41:11,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:11,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:11,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:11,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:11,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:11,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:11,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598317720] [2025-03-09 06:41:11,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598317720] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:41:11,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959184972] [2025-03-09 06:41:11,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:11,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:41:11,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:41:11,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:41:11,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:41:11,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:41:11,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:41:11,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:11,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:11,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:41:11,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:41:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:11,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:41:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:11,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959184972] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:41:11,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:41:11,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-09 06:41:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367403782] [2025-03-09 06:41:11,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:41:11,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:41:11,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:11,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:41:11,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:41:11,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2025-03-09 06:41:11,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 352 flow. Second operand has 12 states, 12 states have (on average 33.083333333333336) internal successors, (397), 12 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:11,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:11,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2025-03-09 06:41:11,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:14,781 INFO L124 PetriNetUnfolderBase]: 40200/53512 cut-off events. [2025-03-09 06:41:14,781 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2025-03-09 06:41:15,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102930 conditions, 53512 events. 40200/53512 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 3602. Compared 345403 event pairs, 26584 based on Foata normal form. 12/33276 useless extension candidates. Maximal degree in co-relation 102648. Up to 48057 conditions per place. [2025-03-09 06:41:15,286 INFO L140 encePairwiseOnDemand]: 105/122 looper letters, 67 selfloop transitions, 49 changer transitions 0/144 dead transitions. [2025-03-09 06:41:15,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 144 transitions, 818 flow [2025-03-09 06:41:15,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:41:15,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:41:15,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 448 transitions. [2025-03-09 06:41:15,288 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36721311475409835 [2025-03-09 06:41:15,288 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 352 flow. Second operand 10 states and 448 transitions. [2025-03-09 06:41:15,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 144 transitions, 818 flow [2025-03-09 06:41:15,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 144 transitions, 710 flow, removed 20 selfloop flow, removed 5 redundant places. [2025-03-09 06:41:15,291 INFO L231 Difference]: Finished difference. Result has 100 places, 144 transitions, 642 flow [2025-03-09 06:41:15,292 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=642, PETRI_PLACES=100, PETRI_TRANSITIONS=144} [2025-03-09 06:41:15,292 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -5 predicate places. [2025-03-09 06:41:15,292 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 144 transitions, 642 flow [2025-03-09 06:41:15,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.083333333333336) internal successors, (397), 12 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:15,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:15,293 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:15,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:41:15,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-09 06:41:15,497 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:41:15,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:15,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1015030347, now seen corresponding path program 1 times [2025-03-09 06:41:15,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:15,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118241190] [2025-03-09 06:41:15,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:15,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:15,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:41:15,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:41:15,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:15,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:15,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118241190] [2025-03-09 06:41:15,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118241190] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:15,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:15,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:41:15,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679162053] [2025-03-09 06:41:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:15,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:41:15,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:15,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:41:15,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:41:15,614 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 122 [2025-03-09 06:41:15,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 144 transitions, 642 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:15,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:15,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 122 [2025-03-09 06:41:15,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:20,780 INFO L124 PetriNetUnfolderBase]: 68337/91069 cut-off events. [2025-03-09 06:41:20,781 INFO L125 PetriNetUnfolderBase]: For 812/812 co-relation queries the response was YES. [2025-03-09 06:41:21,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175384 conditions, 91069 events. 68337/91069 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 5146. Compared 610998 event pairs, 21415 based on Foata normal form. 2363/60168 useless extension candidates. Maximal degree in co-relation 175255. Up to 50735 conditions per place. [2025-03-09 06:41:21,356 INFO L140 encePairwiseOnDemand]: 112/122 looper letters, 150 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2025-03-09 06:41:21,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 186 transitions, 1040 flow [2025-03-09 06:41:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:41:21,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:41:21,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2025-03-09 06:41:21,357 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6338797814207651 [2025-03-09 06:41:21,357 INFO L175 Difference]: Start difference. First operand has 100 places, 144 transitions, 642 flow. Second operand 3 states and 232 transitions. [2025-03-09 06:41:21,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 186 transitions, 1040 flow [2025-03-09 06:41:21,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 990 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-03-09 06:41:21,361 INFO L231 Difference]: Finished difference. Result has 101 places, 147 transitions, 628 flow [2025-03-09 06:41:21,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=628, PETRI_PLACES=101, PETRI_TRANSITIONS=147} [2025-03-09 06:41:21,361 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -4 predicate places. [2025-03-09 06:41:21,361 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 147 transitions, 628 flow [2025-03-09 06:41:21,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:21,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:21,362 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:21,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:41:21,362 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:41:21,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1401172034, now seen corresponding path program 1 times [2025-03-09 06:41:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:21,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189707787] [2025-03-09 06:41:21,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:21,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:21,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:41:21,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:41:21,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:21,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:21,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:21,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189707787] [2025-03-09 06:41:21,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189707787] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:21,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:21,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:41:21,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757396497] [2025-03-09 06:41:21,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:21,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:41:21,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:21,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:41:21,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:41:21,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 122 [2025-03-09 06:41:21,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 147 transitions, 628 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:21,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:21,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 122 [2025-03-09 06:41:21,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:41:29,033 INFO L124 PetriNetUnfolderBase]: 97694/129568 cut-off events. [2025-03-09 06:41:29,033 INFO L125 PetriNetUnfolderBase]: For 9854/10022 co-relation queries the response was YES. [2025-03-09 06:41:29,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269418 conditions, 129568 events. 97694/129568 cut-off events. For 9854/10022 co-relation queries the response was YES. Maximal size of possible extension queue 3483. Compared 822690 event pairs, 31944 based on Foata normal form. 0/98062 useless extension candidates. Maximal degree in co-relation 269294. Up to 66408 conditions per place. [2025-03-09 06:41:29,901 INFO L140 encePairwiseOnDemand]: 117/122 looper letters, 155 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2025-03-09 06:41:29,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 184 transitions, 1032 flow [2025-03-09 06:41:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:41:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:41:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2025-03-09 06:41:29,902 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2025-03-09 06:41:29,902 INFO L175 Difference]: Start difference. First operand has 101 places, 147 transitions, 628 flow. Second operand 3 states and 208 transitions. [2025-03-09 06:41:29,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 184 transitions, 1032 flow [2025-03-09 06:41:29,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 184 transitions, 1028 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:41:29,908 INFO L231 Difference]: Finished difference. Result has 104 places, 148 transitions, 646 flow [2025-03-09 06:41:29,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=104, PETRI_TRANSITIONS=148} [2025-03-09 06:41:29,909 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -1 predicate places. [2025-03-09 06:41:29,909 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 148 transitions, 646 flow [2025-03-09 06:41:29,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:29,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:41:29,909 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:41:29,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:41:29,909 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-03-09 06:41:29,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:41:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1614350871, now seen corresponding path program 1 times [2025-03-09 06:41:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:41:29,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760988355] [2025-03-09 06:41:29,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:41:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:41:29,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:41:29,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:41:29,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:41:29,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:41:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:41:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:41:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760988355] [2025-03-09 06:41:30,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760988355] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:41:30,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:41:30,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:41:30,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475982164] [2025-03-09 06:41:30,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:41:30,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:41:30,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:41:30,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:41:30,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:41:30,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 122 [2025-03-09 06:41:30,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 148 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:41:30,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:41:30,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 122 [2025-03-09 06:41:30,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand