./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:28:18,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:28:18,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:28:18,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:28:18,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:28:18,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:28:18,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:28:18,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:28:18,618 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:28:18,619 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:28:18,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:28:18,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:28:18,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:28:18,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:28:18,622 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:28:18,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:28:18,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:28:18,625 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:28:18,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:28:18,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:28:18,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:28:18,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:28:18,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:28:18,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:28:18,630 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:28:18,630 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:28:18,630 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:28:18,631 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:28:18,631 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:28:18,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:28:18,631 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:28:18,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:28:18,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:28:18,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:28:18,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:28:18,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:28:18,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:28:18,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:28:18,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:28:18,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:28:18,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:28:18,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:28:18,637 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2024-11-16 19:28:18,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:28:18,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:28:18,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:28:18,911 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:28:18,912 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:28:18,913 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-11-16 19:28:20,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:28:20,606 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:28:20,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-11-16 19:28:20,615 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1db5fc0/b46054c0210144ac982c531417c96810/FLAG6bf2bd11a [2024-11-16 19:28:20,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1db5fc0/b46054c0210144ac982c531417c96810 [2024-11-16 19:28:20,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:28:20,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:28:20,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:28:20,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:28:20,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:28:20,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:28:20" (1/1) ... [2024-11-16 19:28:20,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5022a629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:20, skipping insertion in model container [2024-11-16 19:28:20,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:28:20" (1/1) ... [2024-11-16 19:28:20,671 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:28:20,927 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-11-16 19:28:20,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:28:20,947 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:28:21,006 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2024-11-16 19:28:21,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:28:21,038 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:28:21,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21 WrapperNode [2024-11-16 19:28:21,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:28:21,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:28:21,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:28:21,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:28:21,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,093 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 453 [2024-11-16 19:28:21,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:28:21,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:28:21,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:28:21,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:28:21,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,114 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,145 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]. [2024-11-16 19:28:21,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,164 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,168 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:28:21,176 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:28:21,176 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:28:21,176 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:28:21,179 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (1/1) ... [2024-11-16 19:28:21,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:28:21,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:21,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:28:21,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:28:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:28:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:28:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:28:21,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:28:21,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:28:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:28:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:28:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-16 19:28:21,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-16 19:28:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:28:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:28:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:28:21,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:28:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:28:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:28:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:28:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:28:21,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:28:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:28:21,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:28:21,282 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:28:21,398 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:28:21,400 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:28:22,053 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:28:22,054 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:28:22,577 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:28:22,578 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:28:22,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:28:22 BoogieIcfgContainer [2024-11-16 19:28:22,579 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:28:22,582 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:28:22,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:28:22,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:28:22,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:28:20" (1/3) ... [2024-11-16 19:28:22,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e7384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:28:22, skipping insertion in model container [2024-11-16 19:28:22,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:28:21" (2/3) ... [2024-11-16 19:28:22,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e7384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:28:22, skipping insertion in model container [2024-11-16 19:28:22,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:28:22" (3/3) ... [2024-11-16 19:28:22,590 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-11-16 19:28:22,612 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:28:22,612 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:28:22,612 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:28:22,688 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-16 19:28:22,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 96 transitions, 220 flow [2024-11-16 19:28:22,785 INFO L124 PetriNetUnfolderBase]: 28/92 cut-off events. [2024-11-16 19:28:22,786 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:28:22,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 92 events. 28/92 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 192 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 78. Up to 8 conditions per place. [2024-11-16 19:28:22,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 96 transitions, 220 flow [2024-11-16 19:28:22,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 91 transitions, 206 flow [2024-11-16 19:28:22,808 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:28:22,819 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;@5df1761e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:28:22,819 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:28:22,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:28:22,867 INFO L124 PetriNetUnfolderBase]: 28/90 cut-off events. [2024-11-16 19:28:22,867 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:28:22,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:22,869 INFO L204 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] [2024-11-16 19:28:22,869 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)] === [2024-11-16 19:28:22,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1155180617, now seen corresponding path program 1 times [2024-11-16 19:28:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102440985] [2024-11-16 19:28:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:22,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:23,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102440985] [2024-11-16 19:28:23,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102440985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:23,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:23,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:28:23,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837032638] [2024-11-16 19:28:23,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:23,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:28:23,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:28:23,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:28:23,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-16 19:28:23,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 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) [2024-11-16 19:28:23,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:23,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-16 19:28:23,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:24,569 INFO L124 PetriNetUnfolderBase]: 8519/11303 cut-off events. [2024-11-16 19:28:24,570 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-11-16 19:28:24,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21675 conditions, 11303 events. 8519/11303 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 49662 event pairs, 4408 based on Foata normal form. 4/8969 useless extension candidates. Maximal degree in co-relation 20136. Up to 9899 conditions per place. [2024-11-16 19:28:24,704 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 50 selfloop transitions, 0 changer transitions 0/83 dead transitions. [2024-11-16 19:28:24,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 290 flow [2024-11-16 19:28:24,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:28:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:28:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2024-11-16 19:28:24,720 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-16 19:28:24,722 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 206 flow. Second operand 2 states and 132 transitions. [2024-11-16 19:28:24,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 290 flow [2024-11-16 19:28:24,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 274 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-16 19:28:24,747 INFO L231 Difference]: Finished difference. Result has 69 places, 83 transitions, 174 flow [2024-11-16 19:28:24,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=174, PETRI_PLACES=69, PETRI_TRANSITIONS=83} [2024-11-16 19:28:24,755 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -7 predicate places. [2024-11-16 19:28:24,756 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 83 transitions, 174 flow [2024-11-16 19:28:24,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 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) [2024-11-16 19:28:24,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:24,757 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:24,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:28:24,757 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)] === [2024-11-16 19:28:24,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:24,758 INFO L85 PathProgramCache]: Analyzing trace with hash -979443282, now seen corresponding path program 1 times [2024-11-16 19:28:24,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:24,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85791731] [2024-11-16 19:28:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:24,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:25,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:25,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85791731] [2024-11-16 19:28:25,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85791731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:25,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:25,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:28:25,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409581474] [2024-11-16 19:28:25,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:25,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:25,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:25,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:25,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:25,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-16 19:28:25,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 83 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-16 19:28:25,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:25,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-16 19:28:25,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:27,304 INFO L124 PetriNetUnfolderBase]: 17123/24922 cut-off events. [2024-11-16 19:28:27,304 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2024-11-16 19:28:27,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45021 conditions, 24922 events. 17123/24922 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 150245 event pairs, 4408 based on Foata normal form. 1/19441 useless extension candidates. Maximal degree in co-relation 45018. Up to 11771 conditions per place. [2024-11-16 19:28:27,502 INFO L140 encePairwiseOnDemand]: 88/96 looper letters, 81 selfloop transitions, 7 changer transitions 1/122 dead transitions. [2024-11-16 19:28:27,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 122 transitions, 437 flow [2024-11-16 19:28:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:28:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:28:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2024-11-16 19:28:27,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-16 19:28:27,506 INFO L175 Difference]: Start difference. First operand has 69 places, 83 transitions, 174 flow. Second operand 3 states and 201 transitions. [2024-11-16 19:28:27,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 122 transitions, 437 flow [2024-11-16 19:28:27,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 122 transitions, 437 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:28:27,513 INFO L231 Difference]: Finished difference. Result has 72 places, 89 transitions, 221 flow [2024-11-16 19:28:27,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=72, PETRI_TRANSITIONS=89} [2024-11-16 19:28:27,515 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -4 predicate places. [2024-11-16 19:28:27,515 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 89 transitions, 221 flow [2024-11-16 19:28:27,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-16 19:28:27,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:27,516 INFO L204 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] [2024-11-16 19:28:27,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:28:27,517 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)] === [2024-11-16 19:28:27,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:27,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1132951477, now seen corresponding path program 1 times [2024-11-16 19:28:27,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:27,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623470230] [2024-11-16 19:28:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:27,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:27,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623470230] [2024-11-16 19:28:27,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623470230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:27,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:27,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:28:27,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286135638] [2024-11-16 19:28:27,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:27,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:27,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:27,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-16 19:28:27,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 89 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-16 19:28:27,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:27,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-16 19:28:27,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:31,059 INFO L124 PetriNetUnfolderBase]: 33339/49190 cut-off events. [2024-11-16 19:28:31,060 INFO L125 PetriNetUnfolderBase]: For 7738/7738 co-relation queries the response was YES. [2024-11-16 19:28:31,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99021 conditions, 49190 events. 33339/49190 cut-off events. For 7738/7738 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 330517 event pairs, 9127 based on Foata normal form. 560/38914 useless extension candidates. Maximal degree in co-relation 99016. Up to 20400 conditions per place. [2024-11-16 19:28:31,415 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 98 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-11-16 19:28:31,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 133 transitions, 543 flow [2024-11-16 19:28:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:28:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:28:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2024-11-16 19:28:31,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-16 19:28:31,420 INFO L175 Difference]: Start difference. First operand has 72 places, 89 transitions, 221 flow. Second operand 3 states and 201 transitions. [2024-11-16 19:28:31,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 133 transitions, 543 flow [2024-11-16 19:28:31,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 133 transitions, 531 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:28:31,441 INFO L231 Difference]: Finished difference. Result has 74 places, 90 transitions, 228 flow [2024-11-16 19:28:31,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=74, PETRI_TRANSITIONS=90} [2024-11-16 19:28:31,442 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, -2 predicate places. [2024-11-16 19:28:31,442 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 90 transitions, 228 flow [2024-11-16 19:28:31,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-16 19:28:31,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:31,443 INFO L204 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] [2024-11-16 19:28:31,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:28:31,444 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)] === [2024-11-16 19:28:31,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash -847832887, now seen corresponding path program 1 times [2024-11-16 19:28:31,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:31,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467326736] [2024-11-16 19:28:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:31,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:31,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467326736] [2024-11-16 19:28:31,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467326736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:31,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:31,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:28:31,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171405637] [2024-11-16 19:28:31,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:31,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:31,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:31,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:31,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:31,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-16 19:28:31,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 90 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-16 19:28:31,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:31,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-16 19:28:31,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:36,952 INFO L124 PetriNetUnfolderBase]: 62931/84858 cut-off events. [2024-11-16 19:28:36,953 INFO L125 PetriNetUnfolderBase]: For 19776/19986 co-relation queries the response was YES. [2024-11-16 19:28:37,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174973 conditions, 84858 events. 62931/84858 cut-off events. For 19776/19986 co-relation queries the response was YES. Maximal size of possible extension queue 2441. Compared 512036 event pairs, 19873 based on Foata normal form. 3612/71860 useless extension candidates. Maximal degree in co-relation 174967. Up to 42555 conditions per place. [2024-11-16 19:28:37,585 INFO L140 encePairwiseOnDemand]: 89/96 looper letters, 92 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2024-11-16 19:28:37,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 129 transitions, 527 flow [2024-11-16 19:28:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:28:37,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:28:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-11-16 19:28:37,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6909722222222222 [2024-11-16 19:28:37,587 INFO L175 Difference]: Start difference. First operand has 74 places, 90 transitions, 228 flow. Second operand 3 states and 199 transitions. [2024-11-16 19:28:37,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 129 transitions, 527 flow [2024-11-16 19:28:37,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 129 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:28:37,620 INFO L231 Difference]: Finished difference. Result has 76 places, 93 transitions, 262 flow [2024-11-16 19:28:37,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=76, PETRI_TRANSITIONS=93} [2024-11-16 19:28:37,621 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 0 predicate places. [2024-11-16 19:28:37,621 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 93 transitions, 262 flow [2024-11-16 19:28:37,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-16 19:28:37,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:37,622 INFO L204 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] [2024-11-16 19:28:37,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:28:37,622 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)] === [2024-11-16 19:28:37,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:37,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1764850291, now seen corresponding path program 1 times [2024-11-16 19:28:37,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:37,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817574371] [2024-11-16 19:28:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:37,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817574371] [2024-11-16 19:28:37,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817574371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:37,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:37,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:28:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897341928] [2024-11-16 19:28:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:37,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:37,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:37,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 96 [2024-11-16 19:28:37,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 93 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-16 19:28:37,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:37,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 96 [2024-11-16 19:28:37,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:28:50,261 INFO L124 PetriNetUnfolderBase]: 121502/184502 cut-off events. [2024-11-16 19:28:50,261 INFO L125 PetriNetUnfolderBase]: For 59185/59521 co-relation queries the response was YES. [2024-11-16 19:28:50,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385090 conditions, 184502 events. 121502/184502 cut-off events. For 59185/59521 co-relation queries the response was YES. Maximal size of possible extension queue 5022. Compared 1555810 event pairs, 38735 based on Foata normal form. 2570/145200 useless extension candidates. Maximal degree in co-relation 385083. Up to 76283 conditions per place. [2024-11-16 19:28:51,494 INFO L140 encePairwiseOnDemand]: 93/96 looper letters, 106 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-11-16 19:28:51,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 141 transitions, 638 flow [2024-11-16 19:28:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:28:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:28:51,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2024-11-16 19:28:51,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-16 19:28:51,496 INFO L175 Difference]: Start difference. First operand has 76 places, 93 transitions, 262 flow. Second operand 3 states and 201 transitions. [2024-11-16 19:28:51,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 141 transitions, 638 flow [2024-11-16 19:28:51,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 141 transitions, 631 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:28:51,515 INFO L231 Difference]: Finished difference. Result has 78 places, 94 transitions, 272 flow [2024-11-16 19:28:51,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=78, PETRI_TRANSITIONS=94} [2024-11-16 19:28:51,516 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-11-16 19:28:51,516 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 94 transitions, 272 flow [2024-11-16 19:28:51,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2024-11-16 19:28:51,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:51,516 INFO L204 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, 1] [2024-11-16 19:28:51,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:28:51,517 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)] === [2024-11-16 19:28:51,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1146106661, now seen corresponding path program 1 times [2024-11-16 19:28:51,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:51,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167840624] [2024-11-16 19:28:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:51,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:28:51,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:51,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167840624] [2024-11-16 19:28:51,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167840624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:28:51,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:28:51,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:28:51,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152480378] [2024-11-16 19:28:51,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:28:51,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:28:51,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:51,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:28:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:28:51,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 96 [2024-11-16 19:28:51,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 94 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2024-11-16 19:28:51,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:51,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 96 [2024-11-16 19:28:51,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand