./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/twostage_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/twostage_3.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:34:03,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:34:03,609 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-01-10 06:34:03,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:34:03,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:34:03,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:34:03,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:34:03,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:34:03,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:34:03,637 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:34:03,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 06:34:03,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 06:34:03,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:34:03,637 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:34:03,637 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:34:03,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:34:03,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 06:34:03,637 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:34:03,638 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:34:03,639 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 06:34:03,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:34:03,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:34:03,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:34:03,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:34:03,639 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:34:03,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:34:03,639 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 06:34:03,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 06:34:03,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:34:03,640 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:34:03,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 06:34:03,640 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 06:34:03,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 06:34:03,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:34:03,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 06:34:03,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 06:34:03,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 06:34:03,641 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 06:34:03,641 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 06:34:03,641 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 -> 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 [2025-01-10 06:34:03,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:34:03,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:34:03,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:34:03,878 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:34:03,878 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:34:03,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/twostage_3.i [2025-01-10 06:34:05,030 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebf478aac/d0432e70c5b841398e9c5eedf04bab0a/FLAGb10f18642 [2025-01-10 06:34:05,351 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:34:05,351 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/twostage_3.i [2025-01-10 06:34:05,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebf478aac/d0432e70c5b841398e9c5eedf04bab0a/FLAGb10f18642 [2025-01-10 06:34:05,388 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebf478aac/d0432e70c5b841398e9c5eedf04bab0a [2025-01-10 06:34:05,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:34:05,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:34:05,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:34:05,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:34:05,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:34:05,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c92c80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05, skipping insertion in model container [2025-01-10 06:34:05,399 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,438 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:34:05,775 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 06:34:05,776 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 06:34:05,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:34:05,784 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:34:05,823 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 06:34:05,823 WARN L1731 CHandler]: Possible shadowing of function lock [2025-01-10 06:34:05,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:34:05,883 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:34:05,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05 WrapperNode [2025-01-10 06:34:05,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:34:05,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:34:05,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:34:05,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:34:05,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,935 INFO L138 Inliner]: procedures = 373, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 171 [2025-01-10 06:34:05,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:34:05,935 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:34:05,935 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:34:05,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:34:05,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,955 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-01-10 06:34:05,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,961 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,965 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:34:05,969 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:34:05,969 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:34:05,969 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:34:05,970 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (1/1) ... [2025-01-10 06:34:05,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 06:34:05,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:34:05,997 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) [2025-01-10 06:34:06,002 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 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2025-01-10 06:34:06,015 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2025-01-10 06:34:06,015 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 06:34:06,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:34:06,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:34:06,016 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 06:34:06,139 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:34:06,141 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:34:06,352 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 06:34:06,352 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:34:06,518 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:34:06,518 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:34:06,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:34:06 BoogieIcfgContainer [2025-01-10 06:34:06,519 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:34:06,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 06:34:06,520 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 06:34:06,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 06:34:06,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:34:05" (1/3) ... [2025-01-10 06:34:06,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6a894a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:34:06, skipping insertion in model container [2025-01-10 06:34:06,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:34:05" (2/3) ... [2025-01-10 06:34:06,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6a894a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:34:06, skipping insertion in model container [2025-01-10 06:34:06,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:34:06" (3/3) ... [2025-01-10 06:34:06,525 INFO L128 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2025-01-10 06:34:06,535 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 06:34:06,536 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG twostage_3.i that has 3 procedures, 66 locations, 1 initial locations, 4 loop locations, and 12 error locations. [2025-01-10 06:34:06,536 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 06:34:06,574 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-01-10 06:34:06,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 72 transitions, 164 flow [2025-01-10 06:34:06,628 INFO L124 PetriNetUnfolderBase]: 10/141 cut-off events. [2025-01-10 06:34:06,629 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-01-10 06:34:06,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 141 events. 10/141 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 585 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 77. Up to 7 conditions per place. [2025-01-10 06:34:06,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 72 transitions, 164 flow [2025-01-10 06:34:06,638 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 72 transitions, 164 flow [2025-01-10 06:34:06,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:34:06,657 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;@2557b564, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:34:06,657 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-01-10 06:34:06,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:34:06,663 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-01-10 06:34:06,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:34:06,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:34:06,663 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:34:06,664 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:34:06,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:34:06,668 INFO L85 PathProgramCache]: Analyzing trace with hash 509576517, now seen corresponding path program 1 times [2025-01-10 06:34:06,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:34:06,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894635843] [2025-01-10 06:34:06,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:34:06,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:34:06,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:34:06,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:34:06,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:34:06,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:34:06,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:34:06,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894635843] [2025-01-10 06:34:06,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894635843] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:34:06,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:34:06,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:34:06,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546168137] [2025-01-10 06:34:06,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:34:06,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:34:06,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:34:06,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:34:06,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:34:06,957 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2025-01-10 06:34:06,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-01-10 06:34:06,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:34:06,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2025-01-10 06:34:06,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:34:07,544 INFO L124 PetriNetUnfolderBase]: 2373/4930 cut-off events. [2025-01-10 06:34:07,545 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2025-01-10 06:34:07,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8886 conditions, 4930 events. 2373/4930 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 35582 event pairs, 1391 based on Foata normal form. 12/4226 useless extension candidates. Maximal degree in co-relation 7940. Up to 2462 conditions per place. [2025-01-10 06:34:07,578 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 80 selfloop transitions, 10 changer transitions 2/118 dead transitions. [2025-01-10 06:34:07,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 118 transitions, 452 flow [2025-01-10 06:34:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:34:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:34:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2025-01-10 06:34:07,588 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6875 [2025-01-10 06:34:07,589 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 164 flow. Second operand 4 states and 198 transitions. [2025-01-10 06:34:07,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 118 transitions, 452 flow [2025-01-10 06:34:07,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 06:34:07,599 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 214 flow [2025-01-10 06:34:07,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2025-01-10 06:34:07,603 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2025-01-10 06:34:07,604 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 214 flow [2025-01-10 06:34:07,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2025-01-10 06:34:07,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:34:07,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 06:34:07,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 06:34:07,605 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:34:07,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:34:07,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1385364072, now seen corresponding path program 1 times [2025-01-10 06:34:07,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:34:07,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87267729] [2025-01-10 06:34:07,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:34:07,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:34:07,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:34:07,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:34:07,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:34:07,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:34:07,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:34:07,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87267729] [2025-01-10 06:34:07,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87267729] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:34:07,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:34:07,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 06:34:07,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597980056] [2025-01-10 06:34:07,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:34:07,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:34:07,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:34:07,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:34:07,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:34:07,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 72 [2025-01-10 06:34:07,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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) [2025-01-10 06:34:07,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:34:07,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 72 [2025-01-10 06:34:07,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 06:34:08,159 INFO L124 PetriNetUnfolderBase]: 2371/4898 cut-off events. [2025-01-10 06:34:08,159 INFO L125 PetriNetUnfolderBase]: For 1235/1235 co-relation queries the response was YES. [2025-01-10 06:34:08,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10040 conditions, 4898 events. 2371/4898 cut-off events. For 1235/1235 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 35368 event pairs, 1175 based on Foata normal form. 260/4959 useless extension candidates. Maximal degree in co-relation 8946. Up to 2115 conditions per place. [2025-01-10 06:34:08,186 INFO L140 encePairwiseOnDemand]: 60/72 looper letters, 90 selfloop transitions, 10 changer transitions 0/124 dead transitions. [2025-01-10 06:34:08,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 124 transitions, 526 flow [2025-01-10 06:34:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 06:34:08,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 06:34:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2025-01-10 06:34:08,189 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7152777777777778 [2025-01-10 06:34:08,189 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 214 flow. Second operand 4 states and 206 transitions. [2025-01-10 06:34:08,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 124 transitions, 526 flow [2025-01-10 06:34:08,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 124 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 06:34:08,207 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 228 flow [2025-01-10 06:34:08,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2025-01-10 06:34:08,207 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2025-01-10 06:34:08,207 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 228 flow [2025-01-10 06:34:08,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 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) [2025-01-10 06:34:08,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:34:08,208 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-01-10 06:34:08,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 06:34:08,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2025-01-10 06:34:08,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:34:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1914850863, now seen corresponding path program 1 times [2025-01-10 06:34:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:34:08,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163193497] [2025-01-10 06:34:08,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:34:08,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:34:08,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:34:08,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:34:08,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:34:08,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:34:08,255 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:34:08,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 06:34:08,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 06:34:08,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:34:08,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:34:08,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:34:08,293 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 06:34:08,294 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2025-01-10 06:34:08,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2025-01-10 06:34:08,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2025-01-10 06:34:08,295 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2025-01-10 06:34:08,296 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2025-01-10 06:34:08,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2025-01-10 06:34:08,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2025-01-10 06:34:08,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2025-01-10 06:34:08,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2025-01-10 06:34:08,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 06:34:08,297 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-01-10 06:34:08,300 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 06:34:08,300 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 06:34:08,338 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-01-10 06:34:08,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 113 transitions, 270 flow [2025-01-10 06:34:08,376 INFO L124 PetriNetUnfolderBase]: 63/497 cut-off events. [2025-01-10 06:34:08,376 INFO L125 PetriNetUnfolderBase]: For 72/84 co-relation queries the response was YES. [2025-01-10 06:34:08,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 497 events. 63/497 cut-off events. For 72/84 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3154 event pairs, 2 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 306. Up to 32 conditions per place. [2025-01-10 06:34:08,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 113 transitions, 270 flow [2025-01-10 06:34:08,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 113 transitions, 270 flow [2025-01-10 06:34:08,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 06:34:08,384 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;@2557b564, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 06:34:08,384 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-01-10 06:34:08,386 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 06:34:08,386 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-01-10 06:34:08,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 06:34:08,387 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 06:34:08,387 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-01-10 06:34:08,387 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2025-01-10 06:34:08,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:34:08,387 INFO L85 PathProgramCache]: Analyzing trace with hash 615538007, now seen corresponding path program 1 times [2025-01-10 06:34:08,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:34:08,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322827705] [2025-01-10 06:34:08,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:34:08,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:34:08,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 06:34:08,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 06:34:08,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:34:08,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:34:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:34:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:34:08,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322827705] [2025-01-10 06:34:08,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322827705] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:34:08,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:34:08,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 06:34:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976734196] [2025-01-10 06:34:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:34:08,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 06:34:08,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:34:08,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 06:34:08,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 06:34:08,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 113 [2025-01-10 06:34:08,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2025-01-10 06:34:08,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 06:34:08,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 113 [2025-01-10 06:34:08,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand