./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-commit-2.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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:38:14,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:38:14,122 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:38:14,125 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:38:14,125 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:38:14,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:38:14,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:38:14,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:38:14,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:38:14,139 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:38:14,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:38:14,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:38:14,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:38:14,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:38:14,139 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:38:14,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:38:14,140 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:38:14,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:38:14,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:38:14,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:38:14,141 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:38:14,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:38:14,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:38:14,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:38:14,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:38:14,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:38:14,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:38:14,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:38:14,141 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 -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2025-02-06 04:38:14,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:38:14,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:38:14,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:38:14,359 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:38:14,359 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:38:14,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2025-02-06 04:38:15,575 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/82614fbcb/aa7bf6fb76934bdeb9bbe14b713731a0/FLAG1201e892f [2025-02-06 04:38:15,873 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:38:15,874 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2025-02-06 04:38:15,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/82614fbcb/aa7bf6fb76934bdeb9bbe14b713731a0/FLAG1201e892f [2025-02-06 04:38:16,172 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/82614fbcb/aa7bf6fb76934bdeb9bbe14b713731a0 [2025-02-06 04:38:16,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:38:16,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:38:16,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:38:16,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:38:16,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:38:16,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15fe0a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16, skipping insertion in model container [2025-02-06 04:38:16,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,196 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:38:16,335 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/popl20-commit-2.wvr.c[5898,5911] [2025-02-06 04:38:16,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:38:16,350 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:38:16,385 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/popl20-commit-2.wvr.c[5898,5911] [2025-02-06 04:38:16,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:38:16,405 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:38:16,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16 WrapperNode [2025-02-06 04:38:16,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:38:16,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:38:16,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:38:16,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:38:16,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,456 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 445 [2025-02-06 04:38:16,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:38:16,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:38:16,459 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:38:16,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:38:16,465 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,468 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,495 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-02-06 04:38:16,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,507 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:38:16,520 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:38:16,520 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:38:16,520 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:38:16,521 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (1/1) ... [2025-02-06 04:38:16,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:38:16,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:38:16,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:38:16,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:38:16,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:38:16,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:38:16,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 04:38:16,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:38:16,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:38:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:38:16,581 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:38:16,680 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:38:16,681 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:38:17,138 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:38:17,139 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:38:17,447 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:38:17,447 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:38:17,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:38:17 BoogieIcfgContainer [2025-02-06 04:38:17,448 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:38:17,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:38:17,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:38:17,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:38:17,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:38:16" (1/3) ... [2025-02-06 04:38:17,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20fffbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:38:17, skipping insertion in model container [2025-02-06 04:38:17,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:38:16" (2/3) ... [2025-02-06 04:38:17,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20fffbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:38:17, skipping insertion in model container [2025-02-06 04:38:17,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:38:17" (3/3) ... [2025-02-06 04:38:17,454 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2025-02-06 04:38:17,464 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:38:17,465 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-commit-2.wvr.c that has 5 procedures, 53 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2025-02-06 04:38:17,466 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:38:17,520 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 04:38:17,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 156 flow [2025-02-06 04:38:17,564 INFO L124 PetriNetUnfolderBase]: 12/60 cut-off events. [2025-02-06 04:38:17,565 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:38:17,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 60 events. 12/60 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2025-02-06 04:38:17,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 64 transitions, 156 flow [2025-02-06 04:38:17,570 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 142 flow [2025-02-06 04:38:17,575 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:38:17,584 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;@4ace61c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:38:17,584 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 04:38:17,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:38:17,626 INFO L124 PetriNetUnfolderBase]: 12/58 cut-off events. [2025-02-06 04:38:17,626 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:38:17,626 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:17,627 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] [2025-02-06 04:38:17,627 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:17,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1471609769, now seen corresponding path program 1 times [2025-02-06 04:38:17,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:17,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20526386] [2025-02-06 04:38:17,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:17,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:17,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 04:38:17,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:38:17,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:17,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:38:17,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:17,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20526386] [2025-02-06 04:38:17,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20526386] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:17,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:17,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:38:17,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447067275] [2025-02-06 04:38:17,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:17,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 04:38:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:17,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 04:38:17,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 04:38:17,816 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:17,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:17,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:17,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:17,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:20,333 INFO L124 PetriNetUnfolderBase]: 30762/39969 cut-off events. [2025-02-06 04:38:20,334 INFO L125 PetriNetUnfolderBase]: For 1579/1579 co-relation queries the response was YES. [2025-02-06 04:38:20,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81520 conditions, 39969 events. 30762/39969 cut-off events. For 1579/1579 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 206737 event pairs, 26232 based on Foata normal form. 0/35330 useless extension candidates. Maximal degree in co-relation 78021. Up to 39890 conditions per place. [2025-02-06 04:38:20,562 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 50 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2025-02-06 04:38:20,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 234 flow [2025-02-06 04:38:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 04:38:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 04:38:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2025-02-06 04:38:20,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-02-06 04:38:20,572 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 142 flow. Second operand 2 states and 72 transitions. [2025-02-06 04:38:20,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 234 flow [2025-02-06 04:38:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 218 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 04:38:20,596 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 118 flow [2025-02-06 04:38:20,599 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2025-02-06 04:38:20,601 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -7 predicate places. [2025-02-06 04:38:20,602 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 118 flow [2025-02-06 04:38:20,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:20,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:20,602 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] [2025-02-06 04:38:20,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:38:20,603 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:20,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash -738642913, now seen corresponding path program 1 times [2025-02-06 04:38:20,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:20,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410271884] [2025-02-06 04:38:20,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:20,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:20,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 04:38:20,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 04:38:20,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:20,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:38:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410271884] [2025-02-06 04:38:20,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410271884] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:20,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:20,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:38:20,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559337054] [2025-02-06 04:38:20,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:20,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:38:20,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:20,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:38:20,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:38:20,880 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:20,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:20,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:20,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:20,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:23,362 INFO L124 PetriNetUnfolderBase]: 37721/48970 cut-off events. [2025-02-06 04:38:23,362 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2025-02-06 04:38:23,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98669 conditions, 48970 events. 37721/48970 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 272082 event pairs, 8399 based on Foata normal form. 1/42926 useless extension candidates. Maximal degree in co-relation 98666. Up to 41703 conditions per place. [2025-02-06 04:38:23,528 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 76 selfloop transitions, 5 changer transitions 1/87 dead transitions. [2025-02-06 04:38:23,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 353 flow [2025-02-06 04:38:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:38:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:38:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2025-02-06 04:38:23,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-02-06 04:38:23,532 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 118 flow. Second operand 3 states and 110 transitions. [2025-02-06 04:38:23,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 353 flow [2025-02-06 04:38:23,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:38:23,536 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 151 flow [2025-02-06 04:38:23,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2025-02-06 04:38:23,538 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2025-02-06 04:38:23,538 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 151 flow [2025-02-06 04:38:23,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:23,538 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:23,539 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2025-02-06 04:38:23,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:38:23,539 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:23,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:23,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2116363206, now seen corresponding path program 1 times [2025-02-06 04:38:23,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:23,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548727536] [2025-02-06 04:38:23,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:23,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 04:38:23,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:38:23,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:23,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:38:23,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:23,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548727536] [2025-02-06 04:38:23,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548727536] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:23,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:23,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:38:23,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979310944] [2025-02-06 04:38:23,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:23,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:38:23,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:23,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:38:23,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:38:23,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:23,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:23,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:23,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:23,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:26,665 INFO L124 PetriNetUnfolderBase]: 45950/59977 cut-off events. [2025-02-06 04:38:26,665 INFO L125 PetriNetUnfolderBase]: For 5732/5732 co-relation queries the response was YES. [2025-02-06 04:38:26,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128599 conditions, 59977 events. 45950/59977 cut-off events. For 5732/5732 co-relation queries the response was YES. Maximal size of possible extension queue 1608. Compared 332706 event pairs, 17194 based on Foata normal form. 1090/53110 useless extension candidates. Maximal degree in co-relation 128594. Up to 37348 conditions per place. [2025-02-06 04:38:26,856 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 85 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2025-02-06 04:38:26,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 403 flow [2025-02-06 04:38:26,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:38:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:38:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2025-02-06 04:38:26,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-02-06 04:38:26,857 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 151 flow. Second operand 3 states and 112 transitions. [2025-02-06 04:38:26,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 403 flow [2025-02-06 04:38:26,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:38:26,861 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 154 flow [2025-02-06 04:38:26,861 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2025-02-06 04:38:26,862 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2025-02-06 04:38:26,862 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 154 flow [2025-02-06 04:38:26,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:26,862 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:26,862 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2025-02-06 04:38:26,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:38:26,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:26,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1405483814, now seen corresponding path program 1 times [2025-02-06 04:38:26,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712431623] [2025-02-06 04:38:26,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:26,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:26,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 04:38:26,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:38:26,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:26,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:38:26,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712431623] [2025-02-06 04:38:26,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712431623] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:26,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:26,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:38:26,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366379539] [2025-02-06 04:38:26,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:26,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:38:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:26,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:38:26,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:38:26,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:26,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:26,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:26,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:26,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:29,424 INFO L124 PetriNetUnfolderBase]: 42343/55479 cut-off events. [2025-02-06 04:38:29,424 INFO L125 PetriNetUnfolderBase]: For 7456/7456 co-relation queries the response was YES. [2025-02-06 04:38:29,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120198 conditions, 55479 events. 42343/55479 cut-off events. For 7456/7456 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 305118 event pairs, 14804 based on Foata normal form. 914/48925 useless extension candidates. Maximal degree in co-relation 120192. Up to 37354 conditions per place. [2025-02-06 04:38:29,641 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 85 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2025-02-06 04:38:29,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 409 flow [2025-02-06 04:38:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:38:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:38:29,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2025-02-06 04:38:29,644 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2025-02-06 04:38:29,644 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 154 flow. Second operand 3 states and 113 transitions. [2025-02-06 04:38:29,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 409 flow [2025-02-06 04:38:29,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:38:29,652 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 160 flow [2025-02-06 04:38:29,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2025-02-06 04:38:29,653 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2025-02-06 04:38:29,653 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 160 flow [2025-02-06 04:38:29,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:29,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:29,654 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2025-02-06 04:38:29,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:38:29,654 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:29,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:29,655 INFO L85 PathProgramCache]: Analyzing trace with hash -193303620, now seen corresponding path program 1 times [2025-02-06 04:38:29,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:29,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850146863] [2025-02-06 04:38:29,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:29,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:29,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 04:38:29,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:38:29,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:29,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:38:29,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:29,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850146863] [2025-02-06 04:38:29,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850146863] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:29,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:29,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:38:29,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102070939] [2025-02-06 04:38:29,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:29,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:38:29,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:29,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:38:29,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:38:29,758 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:29,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:29,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:29,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:29,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:32,352 INFO L124 PetriNetUnfolderBase]: 43382/56839 cut-off events. [2025-02-06 04:38:32,353 INFO L125 PetriNetUnfolderBase]: For 10077/10077 co-relation queries the response was YES. [2025-02-06 04:38:32,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125815 conditions, 56839 events. 43382/56839 cut-off events. For 10077/10077 co-relation queries the response was YES. Maximal size of possible extension queue 1288. Compared 306053 event pairs, 14565 based on Foata normal form. 695/50431 useless extension candidates. Maximal degree in co-relation 125808. Up to 37488 conditions per place. [2025-02-06 04:38:32,542 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 80 selfloop transitions, 2 changer transitions 6/93 dead transitions. [2025-02-06 04:38:32,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 417 flow [2025-02-06 04:38:32,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:38:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:38:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2025-02-06 04:38:32,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-02-06 04:38:32,544 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 160 flow. Second operand 3 states and 116 transitions. [2025-02-06 04:38:32,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 417 flow [2025-02-06 04:38:32,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:38:32,547 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 166 flow [2025-02-06 04:38:32,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2025-02-06 04:38:32,552 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2025-02-06 04:38:32,552 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 166 flow [2025-02-06 04:38:32,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:32,552 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:32,552 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 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] [2025-02-06 04:38:32,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:38:32,552 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:32,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:32,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1396265992, now seen corresponding path program 1 times [2025-02-06 04:38:32,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:32,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220666337] [2025-02-06 04:38:32,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:32,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:32,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 04:38:32,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 04:38:32,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:32,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:38:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:32,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220666337] [2025-02-06 04:38:32,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220666337] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:32,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:32,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:38:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730260952] [2025-02-06 04:38:32,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:32,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:38:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:32,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:38:32,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:38:32,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:32,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:32,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:32,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:32,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:34,648 INFO L124 PetriNetUnfolderBase]: 27815/36509 cut-off events. [2025-02-06 04:38:34,648 INFO L125 PetriNetUnfolderBase]: For 9053/9053 co-relation queries the response was YES. [2025-02-06 04:38:34,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81653 conditions, 36509 events. 27815/36509 cut-off events. For 9053/9053 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 182013 event pairs, 12783 based on Foata normal form. 312/31781 useless extension candidates. Maximal degree in co-relation 81645. Up to 30323 conditions per place. [2025-02-06 04:38:34,751 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 66 selfloop transitions, 2 changer transitions 8/81 dead transitions. [2025-02-06 04:38:34,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 366 flow [2025-02-06 04:38:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:38:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:38:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2025-02-06 04:38:34,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2025-02-06 04:38:34,753 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 166 flow. Second operand 3 states and 100 transitions. [2025-02-06 04:38:34,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 366 flow [2025-02-06 04:38:34,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 81 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:38:34,755 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 176 flow [2025-02-06 04:38:34,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2025-02-06 04:38:34,756 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2025-02-06 04:38:34,756 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 176 flow [2025-02-06 04:38:34,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:34,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:34,756 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2025-02-06 04:38:34,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:38:34,756 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:34,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash -267195257, now seen corresponding path program 1 times [2025-02-06 04:38:34,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:34,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120249087] [2025-02-06 04:38:34,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:34,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:34,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-06 04:38:34,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-06 04:38:34,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:34,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:38:34,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:34,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120249087] [2025-02-06 04:38:34,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120249087] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:34,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:34,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:38:34,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071223305] [2025-02-06 04:38:34,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:34,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:38:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:34,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:38:34,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:38:34,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:34,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:34,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:34,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:34,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:36,790 INFO L124 PetriNetUnfolderBase]: 32226/42704 cut-off events. [2025-02-06 04:38:36,790 INFO L125 PetriNetUnfolderBase]: For 8865/8865 co-relation queries the response was YES. [2025-02-06 04:38:36,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95689 conditions, 42704 events. 32226/42704 cut-off events. For 8865/8865 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 223610 event pairs, 28730 based on Foata normal form. 281/36683 useless extension candidates. Maximal degree in co-relation 95680. Up to 36456 conditions per place. [2025-02-06 04:38:36,928 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 54 selfloop transitions, 2 changer transitions 35/96 dead transitions. [2025-02-06 04:38:36,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 438 flow [2025-02-06 04:38:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:38:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:38:36,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2025-02-06 04:38:36,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4125 [2025-02-06 04:38:36,929 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 176 flow. Second operand 5 states and 132 transitions. [2025-02-06 04:38:36,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 438 flow [2025-02-06 04:38:36,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:38:36,932 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 190 flow [2025-02-06 04:38:36,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2025-02-06 04:38:36,934 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2025-02-06 04:38:36,934 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 190 flow [2025-02-06 04:38:36,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:36,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:36,934 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2025-02-06 04:38:36,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:38:36,934 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:36,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1024391715, now seen corresponding path program 1 times [2025-02-06 04:38:36,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:36,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362052437] [2025-02-06 04:38:36,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:36,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:36,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 04:38:36,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 04:38:36,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:36,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:38:37,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:37,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362052437] [2025-02-06 04:38:37,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362052437] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:37,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:37,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:38:37,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140899152] [2025-02-06 04:38:37,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:37,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:38:37,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:37,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:38:37,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:38:37,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:37,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:37,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:37,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:37,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:39,884 INFO L124 PetriNetUnfolderBase]: 33980/45155 cut-off events. [2025-02-06 04:38:39,884 INFO L125 PetriNetUnfolderBase]: For 9850/9850 co-relation queries the response was YES. [2025-02-06 04:38:39,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101572 conditions, 45155 events. 33980/45155 cut-off events. For 9850/9850 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 238684 event pairs, 30389 based on Foata normal form. 98/38664 useless extension candidates. Maximal degree in co-relation 101560. Up to 36454 conditions per place. [2025-02-06 04:38:40,051 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 53 selfloop transitions, 4 changer transitions 47/109 dead transitions. [2025-02-06 04:38:40,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 109 transitions, 526 flow [2025-02-06 04:38:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:38:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:38:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2025-02-06 04:38:40,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.453125 [2025-02-06 04:38:40,052 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 190 flow. Second operand 5 states and 145 transitions. [2025-02-06 04:38:40,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 109 transitions, 526 flow [2025-02-06 04:38:40,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 512 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-02-06 04:38:40,057 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 212 flow [2025-02-06 04:38:40,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2025-02-06 04:38:40,058 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2025-02-06 04:38:40,058 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 212 flow [2025-02-06 04:38:40,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:40,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:40,058 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2025-02-06 04:38:40,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:38:40,059 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:40,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:40,059 INFO L85 PathProgramCache]: Analyzing trace with hash -176631479, now seen corresponding path program 1 times [2025-02-06 04:38:40,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:40,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479465844] [2025-02-06 04:38:40,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:40,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:40,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-06 04:38:40,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-06 04:38:40,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:40,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:38:40,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:40,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479465844] [2025-02-06 04:38:40,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479465844] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:40,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:40,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:38:40,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064752912] [2025-02-06 04:38:40,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:40,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:38:40,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:40,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:38:40,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:38:40,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:40,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 212 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:40,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:40,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:40,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:42,759 INFO L124 PetriNetUnfolderBase]: 33129/43938 cut-off events. [2025-02-06 04:38:42,759 INFO L125 PetriNetUnfolderBase]: For 9087/9087 co-relation queries the response was YES. [2025-02-06 04:38:42,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98379 conditions, 43938 events. 33129/43938 cut-off events. For 9087/9087 co-relation queries the response was YES. Maximal size of possible extension queue 926. Compared 229940 event pairs, 29635 based on Foata normal form. 50/37510 useless extension candidates. Maximal degree in co-relation 98366. Up to 36452 conditions per place. [2025-02-06 04:38:42,940 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 55 selfloop transitions, 3 changer transitions 33/96 dead transitions. [2025-02-06 04:38:42,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 484 flow [2025-02-06 04:38:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:38:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:38:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2025-02-06 04:38:42,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2025-02-06 04:38:42,941 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 212 flow. Second operand 4 states and 121 transitions. [2025-02-06 04:38:42,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 484 flow [2025-02-06 04:38:42,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 456 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-02-06 04:38:42,947 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 210 flow [2025-02-06 04:38:42,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2025-02-06 04:38:42,947 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 13 predicate places. [2025-02-06 04:38:42,947 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 210 flow [2025-02-06 04:38:42,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:42,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:42,948 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2025-02-06 04:38:42,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:38:42,948 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:42,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:42,948 INFO L85 PathProgramCache]: Analyzing trace with hash 765293046, now seen corresponding path program 1 times [2025-02-06 04:38:42,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:42,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667397394] [2025-02-06 04:38:42,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:42,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:42,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-06 04:38:42,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 04:38:42,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:42,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:38:43,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667397394] [2025-02-06 04:38:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667397394] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:43,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:43,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:38:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148162507] [2025-02-06 04:38:43,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:43,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:38:43,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:43,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:38:43,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:38:43,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:43,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:43,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:43,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:43,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:45,318 INFO L124 PetriNetUnfolderBase]: 33269/44148 cut-off events. [2025-02-06 04:38:45,318 INFO L125 PetriNetUnfolderBase]: For 9074/9074 co-relation queries the response was YES. [2025-02-06 04:38:45,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98865 conditions, 44148 events. 33269/44148 cut-off events. For 9074/9074 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 232502 event pairs, 29766 based on Foata normal form. 70/37716 useless extension candidates. Maximal degree in co-relation 98852. Up to 36450 conditions per place. [2025-02-06 04:38:45,489 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 51 selfloop transitions, 8 changer transitions 34/98 dead transitions. [2025-02-06 04:38:45,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 98 transitions, 488 flow [2025-02-06 04:38:45,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:38:45,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:38:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2025-02-06 04:38:45,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41875 [2025-02-06 04:38:45,491 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 210 flow. Second operand 5 states and 134 transitions. [2025-02-06 04:38:45,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 98 transitions, 488 flow [2025-02-06 04:38:45,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 476 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-02-06 04:38:45,499 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 232 flow [2025-02-06 04:38:45,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2025-02-06 04:38:45,499 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 16 predicate places. [2025-02-06 04:38:45,499 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 232 flow [2025-02-06 04:38:45,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:45,500 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:45,500 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2025-02-06 04:38:45,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:38:45,500 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:45,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1015791782, now seen corresponding path program 1 times [2025-02-06 04:38:45,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:45,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336334948] [2025-02-06 04:38:45,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:45,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:45,513 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 04:38:45,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 04:38:45,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:45,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:38:45,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336334948] [2025-02-06 04:38:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336334948] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:38:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835477335] [2025-02-06 04:38:45,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:45,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:38:45,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:38:45,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:38:45,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:38:45,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 04:38:45,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 04:38:45,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:45,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:45,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:38:45,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:38:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:38:45,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:38:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:38:46,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835477335] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:38:46,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:38:46,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2025-02-06 04:38:46,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778655660] [2025-02-06 04:38:46,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:38:46,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:38:46,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:46,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:38:46,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:38:46,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2025-02-06 04:38:46,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 232 flow. Second operand has 13 states, 13 states have (on average 16.153846153846153) internal successors, (210), 13 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:46,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:46,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2025-02-06 04:38:46,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand