./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/parallel-barrier.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:14:31,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:14:31,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:14:31,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:14:31,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:14:31,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:14:31,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:14:31,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:14:31,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:14:31,613 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:14:31,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:14:31,613 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:14:31,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:14:31,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:14:31,614 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:14:31,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:14:31,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:14:31,615 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:14:31,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:14:31,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:14:31,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:14:31,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:14:31,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:14:31,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:14:31,616 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:14:31,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:14:31,616 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:14:31,616 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:14:31,616 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:14:31,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:14:31,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:14:31,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:14:31,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:14:31,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:14:31,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:14:31,617 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:14:31,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:14:31,617 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:14:31,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:14:31,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:14:31,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:14:31,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:14:31,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:14:31,618 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 ! call(reach_error())) ) 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 -> b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c [2025-02-08 01:14:31,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:14:31,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:14:31,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:14:31,849 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:14:31,849 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:14:31,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2025-02-08 01:14:33,067 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/43792e5ba/58ea1fc3aeb649d784c57541ef71be2e/FLAGd5267d7b6 [2025-02-08 01:14:33,418 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:14:33,418 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2025-02-08 01:14:33,431 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/43792e5ba/58ea1fc3aeb649d784c57541ef71be2e/FLAGd5267d7b6 [2025-02-08 01:14:33,683 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/43792e5ba/58ea1fc3aeb649d784c57541ef71be2e [2025-02-08 01:14:33,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:14:33,688 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:14:33,690 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:14:33,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:14:33,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:14:33,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eed375a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33, skipping insertion in model container [2025-02-08 01:14:33,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,712 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:14:33,831 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[3418,3431] [2025-02-08 01:14:33,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:14:33,844 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:14:33,873 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c[3418,3431] [2025-02-08 01:14:33,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:14:33,886 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:14:33,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33 WrapperNode [2025-02-08 01:14:33,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:14:33,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:14:33,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:14:33,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:14:33,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,911 INFO L138 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 210 [2025-02-08 01:14:33,912 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:14:33,912 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:14:33,912 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:14:33,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:14:33,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,927 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 01:14:33,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,931 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:14:33,936 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:14:33,936 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:14:33,936 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:14:33,936 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (1/1) ... [2025-02-08 01:14:33,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:14:33,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:33,958 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 01:14:33,966 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 01:14:33,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:14:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:14:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:14:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:14:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:14:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:14:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:14:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-08 01:14:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-08 01:14:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:14:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-08 01:14:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-08 01:14:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-02-08 01:14:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-02-08 01:14:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:14:33,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:14:34,001 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 01:14:34,168 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:14:34,170 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:14:34,428 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:14:34,429 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:14:34,542 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:14:34,543 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:14:34,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:14:34 BoogieIcfgContainer [2025-02-08 01:14:34,543 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:14:34,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:14:34,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:14:34,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:14:34,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:14:33" (1/3) ... [2025-02-08 01:14:34,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e227b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:14:34, skipping insertion in model container [2025-02-08 01:14:34,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:33" (2/3) ... [2025-02-08 01:14:34,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e227b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:14:34, skipping insertion in model container [2025-02-08 01:14:34,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:14:34" (3/3) ... [2025-02-08 01:14:34,549 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2025-02-08 01:14:34,559 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:14:34,560 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-barrier.wvr.c that has 7 procedures, 73 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:14:34,560 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:14:34,619 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-02-08 01:14:34,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 82 transitions, 230 flow [2025-02-08 01:14:34,671 INFO L124 PetriNetUnfolderBase]: 4/70 cut-off events. [2025-02-08 01:14:34,672 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 01:14:34,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 70 events. 4/70 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2025-02-08 01:14:34,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 82 transitions, 230 flow [2025-02-08 01:14:34,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 69 transitions, 186 flow [2025-02-08 01:14:34,682 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:14:34,688 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;@3a215fe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:14:34,689 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-02-08 01:14:34,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:14:34,708 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2025-02-08 01:14:34,708 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 01:14:34,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:34,709 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:34,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-02-08 01:14:34,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:34,713 INFO L85 PathProgramCache]: Analyzing trace with hash 51086957, now seen corresponding path program 1 times [2025-02-08 01:14:34,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:34,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390618173] [2025-02-08 01:14:34,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:34,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 01:14:34,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 01:14:34,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:34,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:35,029 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 01:14:35,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:35,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390618173] [2025-02-08 01:14:35,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390618173] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:35,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:35,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:14:35,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448780968] [2025-02-08 01:14:35,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:35,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:14:35,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:35,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:14:35,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:14:35,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2025-02-08 01:14:35,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:14:35,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:35,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2025-02-08 01:14:35,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:40,843 INFO L124 PetriNetUnfolderBase]: 90013/113964 cut-off events. [2025-02-08 01:14:40,844 INFO L125 PetriNetUnfolderBase]: For 7364/7364 co-relation queries the response was YES. [2025-02-08 01:14:41,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239389 conditions, 113964 events. 90013/113964 cut-off events. For 7364/7364 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 564388 event pairs, 53048 based on Foata normal form. 1984/113164 useless extension candidates. Maximal degree in co-relation 238400. Up to 76768 conditions per place. [2025-02-08 01:14:41,399 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 93 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2025-02-08 01:14:41,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 459 flow [2025-02-08 01:14:41,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:14:41,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:14:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2025-02-08 01:14:41,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46124031007751937 [2025-02-08 01:14:41,408 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 186 flow. Second operand 3 states and 119 transitions. [2025-02-08 01:14:41,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 459 flow [2025-02-08 01:14:42,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 413 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-02-08 01:14:42,153 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 168 flow [2025-02-08 01:14:42,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2025-02-08 01:14:42,161 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -9 predicate places. [2025-02-08 01:14:42,164 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 168 flow [2025-02-08 01:14:42,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:14:42,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:42,164 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:42,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:14:42,164 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-02-08 01:14:42,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash -275253853, now seen corresponding path program 2 times [2025-02-08 01:14:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:42,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267873454] [2025-02-08 01:14:42,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:42,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:42,184 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 1 equivalence classes. [2025-02-08 01:14:42,216 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 01:14:42,216 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:14:42,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:42,455 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 01:14:42,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:42,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267873454] [2025-02-08 01:14:42,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267873454] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:42,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:42,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:14:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107550465] [2025-02-08 01:14:42,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:42,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:14:42,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:42,458 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:14:42,458 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:14:42,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2025-02-08 01:14:42,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:14:42,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:42,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2025-02-08 01:14:42,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:45,807 INFO L124 PetriNetUnfolderBase]: 68959/87699 cut-off events. [2025-02-08 01:14:45,808 INFO L125 PetriNetUnfolderBase]: For 4142/4142 co-relation queries the response was YES. [2025-02-08 01:14:45,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182286 conditions, 87699 events. 68959/87699 cut-off events. For 4142/4142 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 420159 event pairs, 40785 based on Foata normal form. 1544/87308 useless extension candidates. Maximal degree in co-relation 79534. Up to 59185 conditions per place. [2025-02-08 01:14:46,164 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 92 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2025-02-08 01:14:46,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 431 flow [2025-02-08 01:14:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:14:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:14:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2025-02-08 01:14:46,166 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4573643410852713 [2025-02-08 01:14:46,166 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 168 flow. Second operand 3 states and 118 transitions. [2025-02-08 01:14:46,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 431 flow [2025-02-08 01:14:46,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:14:46,372 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 174 flow [2025-02-08 01:14:46,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2025-02-08 01:14:46,372 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, -8 predicate places. [2025-02-08 01:14:46,372 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 174 flow [2025-02-08 01:14:46,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:14:46,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:46,373 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:46,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:14:46,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-02-08 01:14:46,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:46,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1472610689, now seen corresponding path program 3 times [2025-02-08 01:14:46,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:46,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438461012] [2025-02-08 01:14:46,374 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:46,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:46,386 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 1 equivalence classes. [2025-02-08 01:14:46,404 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 01:14:46,404 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:14:46,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:47,269 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 01:14:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438461012] [2025-02-08 01:14:47,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438461012] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:47,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:47,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2025-02-08 01:14:47,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038055093] [2025-02-08 01:14:47,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:47,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 01:14:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:47,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 01:14:47,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2025-02-08 01:14:47,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2025-02-08 01:14:47,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 174 flow. Second operand has 21 states, 21 states have (on average 10.047619047619047) internal successors, (211), 21 states have internal predecessors, (211), 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 01:14:47,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:47,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2025-02-08 01:14:47,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:55,936 INFO L124 PetriNetUnfolderBase]: 93797/119352 cut-off events. [2025-02-08 01:14:55,937 INFO L125 PetriNetUnfolderBase]: For 6830/6830 co-relation queries the response was YES. [2025-02-08 01:14:56,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252143 conditions, 119352 events. 93797/119352 cut-off events. For 6830/6830 co-relation queries the response was YES. Maximal size of possible extension queue 1520. Compared 588035 event pairs, 9219 based on Foata normal form. 2/116520 useless extension candidates. Maximal degree in co-relation 112217. Up to 69520 conditions per place. [2025-02-08 01:14:56,437 INFO L140 encePairwiseOnDemand]: 63/86 looper letters, 576 selfloop transitions, 191 changer transitions 58/826 dead transitions. [2025-02-08 01:14:56,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 826 transitions, 3603 flow [2025-02-08 01:14:56,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-08 01:14:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-02-08 01:14:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1254 transitions. [2025-02-08 01:14:56,444 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.23903926801372474 [2025-02-08 01:14:56,444 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 174 flow. Second operand 61 states and 1254 transitions. [2025-02-08 01:14:56,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 826 transitions, 3603 flow [2025-02-08 01:14:56,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 826 transitions, 3555 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:14:56,601 INFO L231 Difference]: Finished difference. Result has 165 places, 263 transitions, 1235 flow [2025-02-08 01:14:56,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1235, PETRI_PLACES=165, PETRI_TRANSITIONS=263} [2025-02-08 01:14:56,601 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 81 predicate places. [2025-02-08 01:14:56,602 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 263 transitions, 1235 flow [2025-02-08 01:14:56,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.047619047619047) internal successors, (211), 21 states have internal predecessors, (211), 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 01:14:56,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:56,602 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:56,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:14:56,602 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-02-08 01:14:56,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash -388249765, now seen corresponding path program 4 times [2025-02-08 01:14:56,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:56,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643705617] [2025-02-08 01:14:56,603 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:56,613 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 65 statements into 2 equivalence classes. [2025-02-08 01:14:56,622 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 01:14:56,622 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:14:56,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:56,690 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 01:14:56,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:56,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643705617] [2025-02-08 01:14:56,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643705617] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:56,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:56,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:14:56,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478556739] [2025-02-08 01:14:56,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:56,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:14:56,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:56,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:14:56,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:14:56,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2025-02-08 01:14:56,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 263 transitions, 1235 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:14:56,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:56,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2025-02-08 01:14:56,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:03,117 INFO L124 PetriNetUnfolderBase]: 75447/96421 cut-off events. [2025-02-08 01:15:03,117 INFO L125 PetriNetUnfolderBase]: For 263113/263113 co-relation queries the response was YES. [2025-02-08 01:15:03,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305693 conditions, 96421 events. 75447/96421 cut-off events. For 263113/263113 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 470224 event pairs, 33785 based on Foata normal form. 1422/95428 useless extension candidates. Maximal degree in co-relation 305652. Up to 61919 conditions per place. [2025-02-08 01:15:04,142 INFO L140 encePairwiseOnDemand]: 81/86 looper letters, 352 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2025-02-08 01:15:04,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 358 transitions, 2407 flow [2025-02-08 01:15:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:15:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:15:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2025-02-08 01:15:04,144 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2025-02-08 01:15:04,144 INFO L175 Difference]: Start difference. First operand has 165 places, 263 transitions, 1235 flow. Second operand 3 states and 120 transitions. [2025-02-08 01:15:04,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 358 transitions, 2407 flow [2025-02-08 01:15:05,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 358 transitions, 2391 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-02-08 01:15:05,070 INFO L231 Difference]: Finished difference. Result has 164 places, 262 transitions, 1244 flow [2025-02-08 01:15:05,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1244, PETRI_PLACES=164, PETRI_TRANSITIONS=262} [2025-02-08 01:15:05,072 INFO L279 CegarLoopForPetriNet]: 84 programPoint places, 80 predicate places. [2025-02-08 01:15:05,072 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 262 transitions, 1244 flow [2025-02-08 01:15:05,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 01:15:05,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:05,073 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:05,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:15:05,073 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2025-02-08 01:15:05,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:05,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1416787751, now seen corresponding path program 5 times [2025-02-08 01:15:05,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:05,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927622363] [2025-02-08 01:15:05,074 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:05,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:05,084 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 1 equivalence classes. [2025-02-08 01:15:05,097 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 01:15:05,098 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:15:05,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:05,798 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 01:15:05,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:05,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927622363] [2025-02-08 01:15:05,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927622363] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:05,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:05,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2025-02-08 01:15:05,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88330142] [2025-02-08 01:15:05,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:05,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 01:15:05,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:05,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 01:15:05,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2025-02-08 01:15:05,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 86 [2025-02-08 01:15:05,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 262 transitions, 1244 flow. Second operand has 22 states, 22 states have (on average 9.909090909090908) internal successors, (218), 22 states have internal predecessors, (218), 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 01:15:05,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:05,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 86 [2025-02-08 01:15:05,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand