./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 14:30:31,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:30:31,216 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:30:31,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:30:31,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:30:31,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:30:31,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:30:31,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:30:31,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:30:31,245 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:30:31,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:30:31,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:30:31,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:30:31,254 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:30:31,254 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:30:31,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:30:31,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:30:31,255 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:30:31,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:30:31,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:30:31,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:30:31,257 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:30:31,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:30:31,257 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:30:31,258 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:30:31,258 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:30:31,258 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:30:31,258 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:30:31,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:30:31,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:30:31,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:30:31,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:30:31,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:30:31,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:30:31,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:30:31,261 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:30:31,261 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:30:31,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:30:31,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:30:31,262 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:30:31,262 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:30:31,262 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:30:31,263 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2024-10-11 14:30:31,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:30:31,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:30:31,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:30:31,477 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:30:31,477 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:30:31,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-10-11 14:30:32,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:30:33,008 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:30:33,008 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2024-10-11 14:30:33,016 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5b679ace7/a4edc51b766846c8aee55c546f3c6643/FLAG8433a23fe [2024-10-11 14:30:33,028 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5b679ace7/a4edc51b766846c8aee55c546f3c6643 [2024-10-11 14:30:33,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:30:33,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:30:33,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:30:33,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:30:33,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:30:33,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ecb111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33, skipping insertion in model container [2024-10-11 14:30:33,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,074 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:30:33,260 WARN L248 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] [2024-10-11 14:30:33,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:30:33,287 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:30:33,331 WARN L248 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] [2024-10-11 14:30:33,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:30:33,348 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:30:33,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33 WrapperNode [2024-10-11 14:30:33,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:30:33,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:30:33,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:30:33,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:30:33,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,394 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 461 [2024-10-11 14:30:33,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:30:33,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:30:33,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:30:33,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:30:33,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,441 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]. [2024-10-11 14:30:33,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:30:33,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:30:33,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:30:33,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:30:33,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (1/1) ... [2024-10-11 14:30:33,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:30:33,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:30:33,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:30:33,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:30:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:30:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:30:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:30:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:30:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:30:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 14:30:33,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 14:30:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 14:30:33,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 14:30:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:30:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:30:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:30:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:30:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:30:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:30:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 14:30:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:30:33,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:30:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:30:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:30:33,556 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:30:33,653 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:30:33,655 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:30:34,201 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:30:34,205 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:30:34,576 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:30:34,576 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-11 14:30:34,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:34 BoogieIcfgContainer [2024-10-11 14:30:34,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:30:34,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:30:34,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:30:34,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:30:34,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:33" (1/3) ... [2024-10-11 14:30:34,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627b3232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:34, skipping insertion in model container [2024-10-11 14:30:34,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:33" (2/3) ... [2024-10-11 14:30:34,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627b3232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:34, skipping insertion in model container [2024-10-11 14:30:34,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:34" (3/3) ... [2024-10-11 14:30:34,585 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2024-10-11 14:30:34,601 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:30:34,601 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:30:34,601 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:30:34,651 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 14:30:34,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 84 transitions, 196 flow [2024-10-11 14:30:34,712 INFO L124 PetriNetUnfolderBase]: 24/80 cut-off events. [2024-10-11 14:30:34,712 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:30:34,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 24/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 178 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2024-10-11 14:30:34,716 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 84 transitions, 196 flow [2024-10-11 14:30:34,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 79 transitions, 182 flow [2024-10-11 14:30:34,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:30:34,740 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;@93e7436, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:30:34,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-11 14:30:34,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:30:34,768 INFO L124 PetriNetUnfolderBase]: 24/78 cut-off events. [2024-10-11 14:30:34,772 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 14:30:34,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:34,773 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] [2024-10-11 14:30:34,773 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)] === [2024-10-11 14:30:34,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:34,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2146673578, now seen corresponding path program 1 times [2024-10-11 14:30:34,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:34,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149645923] [2024-10-11 14:30:34,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:35,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:35,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149645923] [2024-10-11 14:30:35,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149645923] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:35,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:35,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:30:35,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595144392] [2024-10-11 14:30:35,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:35,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 14:30:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:35,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 14:30:35,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 14:30:35,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-10-11 14:30:35,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2024-10-11 14:30:35,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:35,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-10-11 14:30:35,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:36,002 INFO L124 PetriNetUnfolderBase]: 8494/11195 cut-off events. [2024-10-11 14:30:36,003 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-10-11 14:30:36,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21567 conditions, 11195 events. 8494/11195 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 48233 event pairs, 4408 based on Foata normal form. 0/8983 useless extension candidates. Maximal degree in co-relation 20036. Up to 9899 conditions per place. [2024-10-11 14:30:36,127 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 50 selfloop transitions, 0 changer transitions 0/75 dead transitions. [2024-10-11 14:30:36,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 274 flow [2024-10-11 14:30:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 14:30:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 14:30:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 112 transitions. [2024-10-11 14:30:36,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-11 14:30:36,139 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 182 flow. Second operand 2 states and 112 transitions. [2024-10-11 14:30:36,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 274 flow [2024-10-11 14:30:36,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 258 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 14:30:36,149 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 158 flow [2024-10-11 14:30:36,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2024-10-11 14:30:36,152 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2024-10-11 14:30:36,153 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 158 flow [2024-10-11 14:30:36,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2024-10-11 14:30:36,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:36,153 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] [2024-10-11 14:30:36,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:30:36,154 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)] === [2024-10-11 14:30:36,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1092468766, now seen corresponding path program 1 times [2024-10-11 14:30:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:36,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527651021] [2024-10-11 14:30:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:36,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:36,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527651021] [2024-10-11 14:30:36,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527651021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:36,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:36,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:30:36,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105034200] [2024-10-11 14:30:36,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:36,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:30:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:36,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:30:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:30:36,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-10-11 14:30:36,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-10-11 14:30:36,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:36,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-10-11 14:30:36,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:37,874 INFO L124 PetriNetUnfolderBase]: 17098/24814 cut-off events. [2024-10-11 14:30:37,875 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-10-11 14:30:37,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44913 conditions, 24814 events. 17098/24814 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 149104 event pairs, 4408 based on Foata normal form. 1/19460 useless extension candidates. Maximal degree in co-relation 44910. Up to 11771 conditions per place. [2024-10-11 14:30:38,028 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 81 selfloop transitions, 7 changer transitions 1/114 dead transitions. [2024-10-11 14:30:38,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 114 transitions, 421 flow [2024-10-11 14:30:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:30:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:30:38,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-10-11 14:30:38,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-10-11 14:30:38,033 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 158 flow. Second operand 3 states and 177 transitions. [2024-10-11 14:30:38,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 114 transitions, 421 flow [2024-10-11 14:30:38,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 114 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:30:38,038 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 205 flow [2024-10-11 14:30:38,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2024-10-11 14:30:38,039 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-10-11 14:30:38,039 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 205 flow [2024-10-11 14:30:38,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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) [2024-10-11 14:30:38,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:38,039 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] [2024-10-11 14:30:38,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:30:38,040 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)] === [2024-10-11 14:30:38,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:38,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2135331697, now seen corresponding path program 1 times [2024-10-11 14:30:38,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:38,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487701082] [2024-10-11 14:30:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:38,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:38,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:38,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487701082] [2024-10-11 14:30:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487701082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:38,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:38,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:30:38,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554953281] [2024-10-11 14:30:38,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:38,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:30:38,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:38,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:30:38,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:30:38,192 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-10-11 14:30:38,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-10-11 14:30:38,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:38,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-10-11 14:30:38,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:41,174 INFO L124 PetriNetUnfolderBase]: 33289/48982 cut-off events. [2024-10-11 14:30:41,175 INFO L125 PetriNetUnfolderBase]: For 7678/7678 co-relation queries the response was YES. [2024-10-11 14:30:41,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98813 conditions, 48982 events. 33289/48982 cut-off events. For 7678/7678 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 327038 event pairs, 9127 based on Foata normal form. 610/38962 useless extension candidates. Maximal degree in co-relation 98808. Up to 20400 conditions per place. [2024-10-11 14:30:41,470 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 98 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-10-11 14:30:41,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 125 transitions, 527 flow [2024-10-11 14:30:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:30:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:30:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-10-11 14:30:41,474 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-10-11 14:30:41,474 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 205 flow. Second operand 3 states and 177 transitions. [2024-10-11 14:30:41,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 125 transitions, 527 flow [2024-10-11 14:30:41,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 125 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:30:41,487 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 212 flow [2024-10-11 14:30:41,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=66, PETRI_TRANSITIONS=82} [2024-10-11 14:30:41,488 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2024-10-11 14:30:41,488 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 212 flow [2024-10-11 14:30:41,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-10-11 14:30:41,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:41,489 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] [2024-10-11 14:30:41,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:30:41,489 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)] === [2024-10-11 14:30:41,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1286488125, now seen corresponding path program 1 times [2024-10-11 14:30:41,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:41,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974116324] [2024-10-11 14:30:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:41,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:41,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:41,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974116324] [2024-10-11 14:30:41,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974116324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:41,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:41,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:30:41,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917174130] [2024-10-11 14:30:41,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:41,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:30:41,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:30:41,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:30:41,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-10-11 14:30:41,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-10-11 14:30:41,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:41,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-10-11 14:30:41,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:46,458 INFO L124 PetriNetUnfolderBase]: 62831/84450 cut-off events. [2024-10-11 14:30:46,458 INFO L125 PetriNetUnfolderBase]: For 19656/19866 co-relation queries the response was YES. [2024-10-11 14:30:46,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174565 conditions, 84450 events. 62831/84450 cut-off events. For 19656/19866 co-relation queries the response was YES. Maximal size of possible extension queue 2434. Compared 505131 event pairs, 19873 based on Foata normal form. 3612/71918 useless extension candidates. Maximal degree in co-relation 174559. Up to 42555 conditions per place. [2024-10-11 14:30:47,032 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 92 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2024-10-11 14:30:47,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 121 transitions, 511 flow [2024-10-11 14:30:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:30:47,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:30:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-10-11 14:30:47,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-10-11 14:30:47,034 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 212 flow. Second operand 3 states and 175 transitions. [2024-10-11 14:30:47,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 121 transitions, 511 flow [2024-10-11 14:30:47,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 121 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:30:47,042 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 246 flow [2024-10-11 14:30:47,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2024-10-11 14:30:47,043 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2024-10-11 14:30:47,043 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 246 flow [2024-10-11 14:30:47,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-10-11 14:30:47,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:47,044 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] [2024-10-11 14:30:47,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:30:47,044 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)] === [2024-10-11 14:30:47,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1819453849, now seen corresponding path program 1 times [2024-10-11 14:30:47,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:47,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647816267] [2024-10-11 14:30:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:47,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:47,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:47,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647816267] [2024-10-11 14:30:47,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647816267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:47,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:47,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:30:47,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833113531] [2024-10-11 14:30:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:47,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:30:47,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:47,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:30:47,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:30:47,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2024-10-11 14:30:47,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-10-11 14:30:47,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:47,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2024-10-11 14:30:47,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:30:58,459 INFO L124 PetriNetUnfolderBase]: 121427/184194 cut-off events. [2024-10-11 14:30:58,459 INFO L125 PetriNetUnfolderBase]: For 59031/59367 co-relation queries the response was YES. [2024-10-11 14:30:59,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384782 conditions, 184194 events. 121427/184194 cut-off events. For 59031/59367 co-relation queries the response was YES. Maximal size of possible extension queue 5015. Compared 1551543 event pairs, 38735 based on Foata normal form. 2570/145253 useless extension candidates. Maximal degree in co-relation 384775. Up to 76283 conditions per place. [2024-10-11 14:30:59,615 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 106 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-10-11 14:30:59,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 133 transitions, 622 flow [2024-10-11 14:30:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:30:59,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:30:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-10-11 14:30:59,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2024-10-11 14:30:59,617 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 246 flow. Second operand 3 states and 177 transitions. [2024-10-11 14:30:59,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 133 transitions, 622 flow [2024-10-11 14:30:59,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:30:59,637 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 256 flow [2024-10-11 14:30:59,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2024-10-11 14:30:59,638 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2024-10-11 14:30:59,638 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 256 flow [2024-10-11 14:30:59,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-10-11 14:30:59,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:30:59,638 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] [2024-10-11 14:30:59,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:30:59,639 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)] === [2024-10-11 14:30:59,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:30:59,639 INFO L85 PathProgramCache]: Analyzing trace with hash 545444556, now seen corresponding path program 1 times [2024-10-11 14:30:59,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:30:59,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980045315] [2024-10-11 14:30:59,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:30:59,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:30:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:30:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:30:59,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:30:59,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980045315] [2024-10-11 14:30:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980045315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:30:59,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:30:59,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:30:59,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564154518] [2024-10-11 14:30:59,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:30:59,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:30:59,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:30:59,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:30:59,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:30:59,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 84 [2024-10-11 14:30:59,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-10-11 14:30:59,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:30:59,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 84 [2024-10-11 14:30:59,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand