./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 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -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 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:10:55,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:10:55,078 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:10:55,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:10:55,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:10:55,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:10:55,096 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:10:55,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:10:55,096 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:10:55,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:10:55,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:10:55,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:10:55,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:10:55,098 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:55,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:10:55,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:10:55,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:10:55,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:10:55,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:10:55,099 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 -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2025-02-08 14:10:55,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:10:55,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:10:55,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:10:55,306 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:10:55,306 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:10:55,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-02-08 14:10:56,428 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3659eb6ca/038806dc17ee48fcb039cbe7ff903f5c/FLAGd379d9245 [2025-02-08 14:10:56,655 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:10:56,656 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-02-08 14:10:56,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3659eb6ca/038806dc17ee48fcb039cbe7ff903f5c/FLAGd379d9245 [2025-02-08 14:10:56,994 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3659eb6ca/038806dc17ee48fcb039cbe7ff903f5c [2025-02-08 14:10:56,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:10:56,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:10:56,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:56,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:10:57,000 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:10:57,001 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:57,001 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11eaa356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57, skipping insertion in model container [2025-02-08 14:10:57,001 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:10:56" (1/1) ... [2025-02-08 14:10:57,014 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:10:57,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:57,200 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:10:57,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:10:57,249 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:10:57,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57 WrapperNode [2025-02-08 14:10:57,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:10:57,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:57,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:10:57,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:10:57,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,286 INFO L138 Inliner]: procedures = 25, calls = 74, calls flagged for inlining = 28, calls inlined = 34, statements flattened = 479 [2025-02-08 14:10:57,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:10:57,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:10:57,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:10:57,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:10:57,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,313 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]. [2025-02-08 14:10:57,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,320 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,324 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:10:57,331 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:10:57,333 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:10:57,333 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:10:57,334 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (1/1) ... [2025-02-08 14:10:57,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:10:57,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:10:57,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:10:57,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:10:57,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:10:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:10:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:10:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:10:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:10:57,386 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 14:10:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 14:10:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 14:10:57,387 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 14:10:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:10:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 14:10:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 14:10:57,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 14:10:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 14:10:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 14:10:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 14:10:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:10:57,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:10:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 14:10:57,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 14:10:57,389 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:10:57,488 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:10:57,490 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:10:58,000 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:10:58,000 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:10:58,363 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:10:58,363 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:10:58,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:58 BoogieIcfgContainer [2025-02-08 14:10:58,363 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:10:58,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:10:58,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:10:58,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:10:58,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:10:56" (1/3) ... [2025-02-08 14:10:58,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6344f231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:58, skipping insertion in model container [2025-02-08 14:10:58,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:10:57" (2/3) ... [2025-02-08 14:10:58,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6344f231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:10:58, skipping insertion in model container [2025-02-08 14:10:58,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:10:58" (3/3) ... [2025-02-08 14:10:58,370 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2025-02-08 14:10:58,382 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:10:58,383 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. [2025-02-08 14:10:58,383 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:10:58,455 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-08 14:10:58,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 122 transitions, 272 flow [2025-02-08 14:10:58,544 INFO L124 PetriNetUnfolderBase]: 24/118 cut-off events. [2025-02-08 14:10:58,546 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:10:58,549 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 405 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. [2025-02-08 14:10:58,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 122 transitions, 272 flow [2025-02-08 14:10:58,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 116 transitions, 253 flow [2025-02-08 14:10:58,557 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:10:58,564 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;@71f34079, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:10:58,564 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2025-02-08 14:10:58,568 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:10:58,569 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-02-08 14:10:58,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:10:58,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:10:58,569 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-02-08 14:10:58,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-08 14:10:58,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:10:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1317116, now seen corresponding path program 1 times [2025-02-08 14:10:58,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:10:58,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241935350] [2025-02-08 14:10:58,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:10:58,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:10:58,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:10:58,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:10:58,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:10:58,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:10:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:10:58,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:10:58,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241935350] [2025-02-08 14:10:58,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241935350] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:10:58,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:10:58,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:10:58,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182504575] [2025-02-08 14:10:58,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:10:58,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:10:58,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:10:58,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:10:58,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:10:58,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2025-02-08 14:10:58,839 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) [2025-02-08 14:10:58,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:10:58,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2025-02-08 14:10:58,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:02,227 INFO L124 PetriNetUnfolderBase]: 40185/53460 cut-off events. [2025-02-08 14:11:02,228 INFO L125 PetriNetUnfolderBase]: For 1551/1551 co-relation queries the response was YES. [2025-02-08 14:11:02,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103173 conditions, 53460 events. 40185/53460 cut-off events. For 1551/1551 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 345012 event pairs, 26584 based on Foata normal form. 4/33146 useless extension candidates. Maximal degree in co-relation 99336. Up to 48037 conditions per place. [2025-02-08 14:11:02,570 INFO L140 encePairwiseOnDemand]: 92/122 looper letters, 58 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2025-02-08 14:11:02,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 96 transitions, 349 flow [2025-02-08 14:11:02,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:02,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2025-02-08 14:11:02,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4426229508196721 [2025-02-08 14:11:02,581 INFO L175 Difference]: Start difference. First operand has 105 places, 116 transitions, 253 flow. Second operand 4 states and 216 transitions. [2025-02-08 14:11:02,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 96 transitions, 349 flow [2025-02-08 14:11:02,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 336 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-02-08 14:11:02,632 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 220 flow [2025-02-08 14:11:02,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2025-02-08 14:11:02,637 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -20 predicate places. [2025-02-08 14:11:02,638 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 220 flow [2025-02-08 14:11:02,639 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) [2025-02-08 14:11:02,639 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:02,639 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-08 14:11:02,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:11:02,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-08 14:11:02,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:02,640 INFO L85 PathProgramCache]: Analyzing trace with hash 40831819, now seen corresponding path program 1 times [2025-02-08 14:11:02,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:02,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110122822] [2025-02-08 14:11:02,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:02,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:02,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 14:11:02,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 14:11:02,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:02,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:02,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:02,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110122822] [2025-02-08 14:11:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110122822] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:02,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:02,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:02,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212429699] [2025-02-08 14:11:02,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:02,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:11:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:02,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:11:02,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:11:02,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2025-02-08 14:11:02,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 220 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) [2025-02-08 14:11:02,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:02,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2025-02-08 14:11:02,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:05,840 INFO L124 PetriNetUnfolderBase]: 40189/53476 cut-off events. [2025-02-08 14:11:05,840 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2025-02-08 14:11:05,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102729 conditions, 53476 events. 40189/53476 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 345334 event pairs, 26584 based on Foata normal form. 4/33168 useless extension candidates. Maximal degree in co-relation 102641. Up to 48054 conditions per place. [2025-02-08 14:11:06,100 INFO L140 encePairwiseOnDemand]: 105/122 looper letters, 67 selfloop transitions, 13 changer transitions 0/108 dead transitions. [2025-02-08 14:11:06,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 422 flow [2025-02-08 14:11:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:11:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:11:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2025-02-08 14:11:06,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4344262295081967 [2025-02-08 14:11:06,102 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 220 flow. Second operand 4 states and 212 transitions. [2025-02-08 14:11:06,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 422 flow [2025-02-08 14:11:06,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 108 transitions, 384 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:11:06,106 INFO L231 Difference]: Finished difference. Result has 88 places, 108 transitions, 308 flow [2025-02-08 14:11:06,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=88, PETRI_TRANSITIONS=108} [2025-02-08 14:11:06,106 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -17 predicate places. [2025-02-08 14:11:06,106 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 108 transitions, 308 flow [2025-02-08 14:11:06,107 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) [2025-02-08 14:11:06,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:06,107 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-02-08 14:11:06,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:11:06,107 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-08 14:11:06,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash 946244432, now seen corresponding path program 1 times [2025-02-08 14:11:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:06,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107254270] [2025-02-08 14:11:06,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:06,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:06,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:06,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:06,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:06,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107254270] [2025-02-08 14:11:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107254270] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:11:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012296526] [2025-02-08 14:11:06,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:06,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:11:06,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:11:06,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:11:06,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:11:06,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:11:06,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:06,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:06,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:11:06,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:11:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:06,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:11:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012296526] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:11:06,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:11:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-08 14:11:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827639175] [2025-02-08 14:11:06,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:11:06,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 14:11:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:06,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 14:11:06,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 14:11:06,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 122 [2025-02-08 14:11:06,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 108 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:06,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:06,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 122 [2025-02-08 14:11:06,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:09,569 INFO L124 PetriNetUnfolderBase]: 40201/53524 cut-off events. [2025-02-08 14:11:09,569 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2025-02-08 14:11:09,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102883 conditions, 53524 events. 40201/53524 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 345313 event pairs, 26584 based on Foata normal form. 0/33206 useless extension candidates. Maximal degree in co-relation 102658. Up to 48057 conditions per place. [2025-02-08 14:11:10,170 INFO L140 encePairwiseOnDemand]: 105/122 looper letters, 67 selfloop transitions, 49 changer transitions 0/144 dead transitions. [2025-02-08 14:11:10,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 144 transitions, 702 flow [2025-02-08 14:11:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:11:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:11:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 448 transitions. [2025-02-08 14:11:10,175 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36721311475409835 [2025-02-08 14:11:10,175 INFO L175 Difference]: Start difference. First operand has 88 places, 108 transitions, 308 flow. Second operand 10 states and 448 transitions. [2025-02-08 14:11:10,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 144 transitions, 702 flow [2025-02-08 14:11:10,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 144 transitions, 702 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:11:10,179 INFO L231 Difference]: Finished difference. Result has 100 places, 144 transitions, 634 flow [2025-02-08 14:11:10,179 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=10, PETRI_FLOW=634, PETRI_PLACES=100, PETRI_TRANSITIONS=144} [2025-02-08 14:11:10,180 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -5 predicate places. [2025-02-08 14:11:10,181 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 144 transitions, 634 flow [2025-02-08 14:11:10,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:11:10,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:10,181 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:10,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:11:10,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:11:10,382 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-08 14:11:10,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:10,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1413128469, now seen corresponding path program 1 times [2025-02-08 14:11:10,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:10,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552707719] [2025-02-08 14:11:10,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:10,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:10,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:11:10,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:11:10,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:10,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552707719] [2025-02-08 14:11:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552707719] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:10,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:10,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:11:10,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050918296] [2025-02-08 14:11:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:10,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:10,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:10,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:10,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:10,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 122 [2025-02-08 14:11:10,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 144 transitions, 634 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) [2025-02-08 14:11:10,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:10,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 122 [2025-02-08 14:11:10,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:15,812 INFO L124 PetriNetUnfolderBase]: 68338/91081 cut-off events. [2025-02-08 14:11:15,813 INFO L125 PetriNetUnfolderBase]: For 827/827 co-relation queries the response was YES. [2025-02-08 14:11:16,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175392 conditions, 91081 events. 68338/91081 cut-off events. For 827/827 co-relation queries the response was YES. Maximal size of possible extension queue 5146. Compared 610831 event pairs, 21415 based on Foata normal form. 2337/60115 useless extension candidates. Maximal degree in co-relation 175268. Up to 50735 conditions per place. [2025-02-08 14:11:16,324 INFO L140 encePairwiseOnDemand]: 112/122 looper letters, 150 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2025-02-08 14:11:16,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 186 transitions, 1032 flow [2025-02-08 14:11:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2025-02-08 14:11:16,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6338797814207651 [2025-02-08 14:11:16,326 INFO L175 Difference]: Start difference. First operand has 100 places, 144 transitions, 634 flow. Second operand 3 states and 232 transitions. [2025-02-08 14:11:16,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 186 transitions, 1032 flow [2025-02-08 14:11:16,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 186 transitions, 906 flow, removed 32 selfloop flow, removed 4 redundant places. [2025-02-08 14:11:16,332 INFO L231 Difference]: Finished difference. Result has 99 places, 147 transitions, 544 flow [2025-02-08 14:11:16,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=96, 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=544, PETRI_PLACES=99, PETRI_TRANSITIONS=147} [2025-02-08 14:11:16,335 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -6 predicate places. [2025-02-08 14:11:16,335 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 147 transitions, 544 flow [2025-02-08 14:11:16,335 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) [2025-02-08 14:11:16,336 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:16,336 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:16,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:11:16,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-08 14:11:16,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:16,337 INFO L85 PathProgramCache]: Analyzing trace with hash -857307235, now seen corresponding path program 1 times [2025-02-08 14:11:16,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:16,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985835748] [2025-02-08 14:11:16,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:16,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:16,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:11:16,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:11:16,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:16,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985835748] [2025-02-08 14:11:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985835748] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:16,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:16,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:16,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98703644] [2025-02-08 14:11:16,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:16,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:16,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:16,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:16,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:16,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 122 [2025-02-08 14:11:16,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 147 transitions, 544 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) [2025-02-08 14:11:16,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:16,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 122 [2025-02-08 14:11:16,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:11:23,564 INFO L124 PetriNetUnfolderBase]: 97694/129568 cut-off events. [2025-02-08 14:11:23,564 INFO L125 PetriNetUnfolderBase]: For 9860/10028 co-relation queries the response was YES. [2025-02-08 14:11:23,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269382 conditions, 129568 events. 97694/129568 cut-off events. For 9860/10028 co-relation queries the response was YES. Maximal size of possible extension queue 3459. Compared 821595 event pairs, 31944 based on Foata normal form. 0/98062 useless extension candidates. Maximal degree in co-relation 269274. Up to 66408 conditions per place. [2025-02-08 14:11:24,240 INFO L140 encePairwiseOnDemand]: 117/122 looper letters, 155 selfloop transitions, 4 changer transitions 0/184 dead transitions. [2025-02-08 14:11:24,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 184 transitions, 948 flow [2025-02-08 14:11:24,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:11:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:11:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2025-02-08 14:11:24,241 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2025-02-08 14:11:24,241 INFO L175 Difference]: Start difference. First operand has 99 places, 147 transitions, 544 flow. Second operand 3 states and 208 transitions. [2025-02-08 14:11:24,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 184 transitions, 948 flow [2025-02-08 14:11:24,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 184 transitions, 944 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:11:24,245 INFO L231 Difference]: Finished difference. Result has 102 places, 148 transitions, 562 flow [2025-02-08 14:11:24,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=98, 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=562, PETRI_PLACES=102, PETRI_TRANSITIONS=148} [2025-02-08 14:11:24,246 INFO L279 CegarLoopForPetriNet]: 105 programPoint places, -3 predicate places. [2025-02-08 14:11:24,246 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 148 transitions, 562 flow [2025-02-08 14:11:24,246 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) [2025-02-08 14:11:24,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:11:24,246 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:11:24,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:11:24,247 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2025-02-08 14:11:24,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:11:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1415864968, now seen corresponding path program 1 times [2025-02-08 14:11:24,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:11:24,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924029530] [2025-02-08 14:11:24,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:11:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:11:24,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:11:24,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:11:24,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:11:24,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:11:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:11:24,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:11:24,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924029530] [2025-02-08 14:11:24,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924029530] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:11:24,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:11:24,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:11:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327602573] [2025-02-08 14:11:24,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:11:24,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:11:24,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:11:24,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:11:24,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:11:24,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 122 [2025-02-08 14:11:24,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 148 transitions, 562 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) [2025-02-08 14:11:24,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:11:24,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 122 [2025-02-08 14:11:24,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand