./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i -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 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:29:34,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:29:34,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:29:35,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:29:35,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:29:35,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:29:35,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:29:35,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:29:35,019 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:29:35,022 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:29:35,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:29:35,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:29:35,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:29:35,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:29:35,024 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:29:35,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:29:35,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:29:35,025 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:29:35,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:29:35,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:29:35,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:29:35,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:29:35,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:29:35,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:29:35,027 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:29:35,028 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:29:35,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:29:35,028 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:29:35,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:29:35,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:29:35,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:29:35,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:29:35,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:29:35,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:29:35,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:29:35,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:29:35,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:29:35,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:29:35,031 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:29:35,031 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:29:35,031 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:29:35,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:29:35,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:29:35,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 [2024-06-27 17:29:35,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:29:35,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:29:35,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:29:35,237 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:29:35,237 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:29:35,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2024-06-27 17:29:36,496 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:29:36,685 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:29:36,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2024-06-27 17:29:36,703 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf7356f0a/4855953bb322453aa9d6b4da257ae5e5/FLAGa6ec11b15 [2024-06-27 17:29:36,714 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf7356f0a/4855953bb322453aa9d6b4da257ae5e5 [2024-06-27 17:29:36,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:29:36,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:29:36,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:29:36,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:29:36,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:29:36,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:29:36" (1/1) ... [2024-06-27 17:29:36,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c7afb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:36, skipping insertion in model container [2024-06-27 17:29:36,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:29:36" (1/1) ... [2024-06-27 17:29:36,781 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:29:36,923 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i[994,1007] [2024-06-27 17:29:37,129 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:29:37,141 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:29:37,150 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i[994,1007] [2024-06-27 17:29:37,193 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:29:37,225 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:29:37,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37 WrapperNode [2024-06-27 17:29:37,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:29:37,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:29:37,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:29:37,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:29:37,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,293 INFO L138 Inliner]: procedures = 176, calls = 72, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 178 [2024-06-27 17:29:37,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:29:37,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:29:37,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:29:37,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:29:37,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,317 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,332 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-06-27 17:29:37,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:29:37,350 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:29:37,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:29:37,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:29:37,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (1/1) ... [2024-06-27 17:29:37,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:29:37,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:29:37,404 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) [2024-06-27 17:29:37,454 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 [2024-06-27 17:29:37,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 17:29:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 17:29:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 17:29:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 17:29:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:29:37,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:29:37,490 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 17:29:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 17:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 17:29:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 17:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 17:29:37,491 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 17:29:37,491 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 17:29:37,492 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 17:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 17:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:29:37,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:29:37,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:29:37,494 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:29:37,660 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:29:37,662 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:29:38,112 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:29:38,112 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:29:38,368 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:29:38,368 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:29:38,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:29:38 BoogieIcfgContainer [2024-06-27 17:29:38,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:29:38,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:29:38,370 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:29:38,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:29:38,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:29:36" (1/3) ... [2024-06-27 17:29:38,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c57b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:29:38, skipping insertion in model container [2024-06-27 17:29:38,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:29:37" (2/3) ... [2024-06-27 17:29:38,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c57b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:29:38, skipping insertion in model container [2024-06-27 17:29:38,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:29:38" (3/3) ... [2024-06-27 17:29:38,375 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2024-06-27 17:29:38,382 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:29:38,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:29:38,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 17:29:38,389 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:29:38,442 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:29:38,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 46 transitions, 108 flow [2024-06-27 17:29:38,495 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-06-27 17:29:38,495 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:29:38,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 17:29:38,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 46 transitions, 108 flow [2024-06-27 17:29:38,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 42 transitions, 96 flow [2024-06-27 17:29:38,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:29:38,519 INFO L357 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, mHoare=true, 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;@7faeb06c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:29:38,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 17:29:38,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:29:38,526 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-06-27 17:29:38,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:29:38,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:38,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-27 17:29:38,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:38,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:38,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1479970781, now seen corresponding path program 1 times [2024-06-27 17:29:38,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:38,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627870814] [2024-06-27 17:29:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:38,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627870814] [2024-06-27 17:29:38,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627870814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:38,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:38,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:29:38,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627383918] [2024-06-27 17:29:38,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:38,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:29:38,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:38,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:29:38,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:29:38,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 46 [2024-06-27 17:29:38,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:29:38,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:38,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 46 [2024-06-27 17:29:38,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:29:40,251 INFO L124 PetriNetUnfolderBase]: 2959/4656 cut-off events. [2024-06-27 17:29:40,252 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-06-27 17:29:40,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8884 conditions, 4656 events. 2959/4656 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29723 event pairs, 868 based on Foata normal form. 144/4715 useless extension candidates. Maximal degree in co-relation 8872. Up to 3274 conditions per place. [2024-06-27 17:29:40,276 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 37 selfloop transitions, 2 changer transitions 2/57 dead transitions. [2024-06-27 17:29:40,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 214 flow [2024-06-27 17:29:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:29:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:29:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 17:29:40,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2024-06-27 17:29:40,287 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 3 states and 104 transitions. [2024-06-27 17:29:40,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 214 flow [2024-06-27 17:29:40,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:29:40,295 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 90 flow [2024-06-27 17:29:40,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-27 17:29:40,312 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2024-06-27 17:29:40,312 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 90 flow [2024-06-27 17:29:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:29:40,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:40,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:29:40,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:29:40,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:40,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:40,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1854869199, now seen corresponding path program 1 times [2024-06-27 17:29:40,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:40,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824414991] [2024-06-27 17:29:40,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:40,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:40,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:40,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:40,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824414991] [2024-06-27 17:29:40,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824414991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:40,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:40,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:29:40,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588044701] [2024-06-27 17:29:40,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:40,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:29:40,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:29:40,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:29:40,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 17:29:40,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-06-27 17:29:40,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:40,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 17:29:40,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:29:42,666 INFO L124 PetriNetUnfolderBase]: 7353/10751 cut-off events. [2024-06-27 17:29:42,666 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-06-27 17:29:42,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21627 conditions, 10751 events. 7353/10751 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 71863 event pairs, 1407 based on Foata normal form. 0/10498 useless extension candidates. Maximal degree in co-relation 21617. Up to 6097 conditions per place. [2024-06-27 17:29:42,716 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 36 selfloop transitions, 3 changer transitions 58/109 dead transitions. [2024-06-27 17:29:42,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 109 transitions, 438 flow [2024-06-27 17:29:42,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:29:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:29:42,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-06-27 17:29:42,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168478260869565 [2024-06-27 17:29:42,724 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 90 flow. Second operand 8 states and 227 transitions. [2024-06-27 17:29:42,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 109 transitions, 438 flow [2024-06-27 17:29:42,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:29:42,727 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 119 flow [2024-06-27 17:29:42,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=119, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2024-06-27 17:29:42,729 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-27 17:29:42,729 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 119 flow [2024-06-27 17:29:42,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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) [2024-06-27 17:29:42,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:42,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:29:42,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:29:42,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:42,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:42,739 INFO L85 PathProgramCache]: Analyzing trace with hash 918276786, now seen corresponding path program 1 times [2024-06-27 17:29:42,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:42,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359287093] [2024-06-27 17:29:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:42,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:42,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:42,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:42,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359287093] [2024-06-27 17:29:42,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359287093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:42,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:42,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:29:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54467895] [2024-06-27 17:29:42,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:42,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:29:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:29:42,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:29:42,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2024-06-27 17:29:42,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-27 17:29:42,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:42,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2024-06-27 17:29:42,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:29:44,210 INFO L124 PetriNetUnfolderBase]: 5798/9189 cut-off events. [2024-06-27 17:29:44,211 INFO L125 PetriNetUnfolderBase]: For 3168/3168 co-relation queries the response was YES. [2024-06-27 17:29:44,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19739 conditions, 9189 events. 5798/9189 cut-off events. For 3168/3168 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 63169 event pairs, 1691 based on Foata normal form. 288/9257 useless extension candidates. Maximal degree in co-relation 19724. Up to 5254 conditions per place. [2024-06-27 17:29:44,259 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 40 selfloop transitions, 2 changer transitions 41/98 dead transitions. [2024-06-27 17:29:44,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 417 flow [2024-06-27 17:29:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:29:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:29:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-27 17:29:44,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6335403726708074 [2024-06-27 17:29:44,261 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 119 flow. Second operand 7 states and 204 transitions. [2024-06-27 17:29:44,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 417 flow [2024-06-27 17:29:44,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 406 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 17:29:44,298 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 128 flow [2024-06-27 17:29:44,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2024-06-27 17:29:44,299 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 17:29:44,299 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 128 flow [2024-06-27 17:29:44,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-27 17:29:44,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:44,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:29:44,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:29:44,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:44,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1795070541, now seen corresponding path program 1 times [2024-06-27 17:29:44,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:44,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583744766] [2024-06-27 17:29:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:44,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:44,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:44,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583744766] [2024-06-27 17:29:44,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583744766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:44,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:44,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:29:44,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448251627] [2024-06-27 17:29:44,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:44,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:29:44,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:44,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:29:44,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:29:44,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:29:44,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 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) [2024-06-27 17:29:44,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:44,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:29:44,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:29:45,455 INFO L124 PetriNetUnfolderBase]: 4321/6741 cut-off events. [2024-06-27 17:29:45,455 INFO L125 PetriNetUnfolderBase]: For 4536/4536 co-relation queries the response was YES. [2024-06-27 17:29:45,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15856 conditions, 6741 events. 4321/6741 cut-off events. For 4536/4536 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 44839 event pairs, 1237 based on Foata normal form. 180/6767 useless extension candidates. Maximal degree in co-relation 15837. Up to 4042 conditions per place. [2024-06-27 17:29:45,495 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 34 selfloop transitions, 2 changer transitions 37/89 dead transitions. [2024-06-27 17:29:45,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 390 flow [2024-06-27 17:29:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:29:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:29:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2024-06-27 17:29:45,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242236024844721 [2024-06-27 17:29:45,498 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 128 flow. Second operand 7 states and 201 transitions. [2024-06-27 17:29:45,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 390 flow [2024-06-27 17:29:45,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 89 transitions, 370 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 17:29:45,542 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 132 flow [2024-06-27 17:29:45,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2024-06-27 17:29:45,544 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-27 17:29:45,544 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 132 flow [2024-06-27 17:29:45,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 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) [2024-06-27 17:29:45,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:45,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:29:45,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:29:45,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:45,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:45,545 INFO L85 PathProgramCache]: Analyzing trace with hash 103424285, now seen corresponding path program 1 times [2024-06-27 17:29:45,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:45,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291926762] [2024-06-27 17:29:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:45,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:45,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:45,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291926762] [2024-06-27 17:29:45,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291926762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:45,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:45,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:29:45,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439607352] [2024-06-27 17:29:45,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:45,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:29:45,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:45,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:29:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:29:45,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-27 17:29:45,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-06-27 17:29:45,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:45,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-27 17:29:45,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:29:47,415 INFO L124 PetriNetUnfolderBase]: 7302/10928 cut-off events. [2024-06-27 17:29:47,415 INFO L125 PetriNetUnfolderBase]: For 7326/7362 co-relation queries the response was YES. [2024-06-27 17:29:47,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26336 conditions, 10928 events. 7302/10928 cut-off events. For 7326/7362 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 75065 event pairs, 2895 based on Foata normal form. 276/11107 useless extension candidates. Maximal degree in co-relation 26316. Up to 4727 conditions per place. [2024-06-27 17:29:47,482 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 41 selfloop transitions, 3 changer transitions 41/97 dead transitions. [2024-06-27 17:29:47,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 97 transitions, 460 flow [2024-06-27 17:29:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:29:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:29:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-27 17:29:47,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6149068322981367 [2024-06-27 17:29:47,484 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 132 flow. Second operand 7 states and 198 transitions. [2024-06-27 17:29:47,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 97 transitions, 460 flow [2024-06-27 17:29:47,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 426 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 17:29:47,574 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 137 flow [2024-06-27 17:29:47,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=137, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2024-06-27 17:29:47,575 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-27 17:29:47,575 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 137 flow [2024-06-27 17:29:47,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-06-27 17:29:47,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:47,575 INFO L208 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] [2024-06-27 17:29:47,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:29:47,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:47,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:47,576 INFO L85 PathProgramCache]: Analyzing trace with hash 628841460, now seen corresponding path program 1 times [2024-06-27 17:29:47,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:47,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477616310] [2024-06-27 17:29:47,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:47,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:48,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:48,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477616310] [2024-06-27 17:29:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477616310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:48,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:48,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:29:48,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326841079] [2024-06-27 17:29:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:48,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:29:48,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:29:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:29:48,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:29:48,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 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) [2024-06-27 17:29:48,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:48,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:29:48,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:29:49,535 INFO L124 PetriNetUnfolderBase]: 6193/9779 cut-off events. [2024-06-27 17:29:49,536 INFO L125 PetriNetUnfolderBase]: For 8931/8958 co-relation queries the response was YES. [2024-06-27 17:29:49,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22831 conditions, 9779 events. 6193/9779 cut-off events. For 8931/8958 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 69860 event pairs, 1588 based on Foata normal form. 312/9944 useless extension candidates. Maximal degree in co-relation 22811. Up to 5244 conditions per place. [2024-06-27 17:29:49,579 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 51 selfloop transitions, 9 changer transitions 49/125 dead transitions. [2024-06-27 17:29:49,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 125 transitions, 568 flow [2024-06-27 17:29:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:29:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:29:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 310 transitions. [2024-06-27 17:29:49,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6126482213438735 [2024-06-27 17:29:49,581 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 137 flow. Second operand 11 states and 310 transitions. [2024-06-27 17:29:49,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 125 transitions, 568 flow [2024-06-27 17:29:49,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 125 transitions, 541 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 17:29:49,638 INFO L231 Difference]: Finished difference. Result has 74 places, 47 transitions, 210 flow [2024-06-27 17:29:49,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=210, PETRI_PLACES=74, PETRI_TRANSITIONS=47} [2024-06-27 17:29:49,638 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-27 17:29:49,639 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 47 transitions, 210 flow [2024-06-27 17:29:49,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 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) [2024-06-27 17:29:49,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:49,639 INFO L208 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] [2024-06-27 17:29:49,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:29:49,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:49,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:49,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1200526832, now seen corresponding path program 1 times [2024-06-27 17:29:49,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:49,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013834396] [2024-06-27 17:29:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:49,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:49,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:49,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013834396] [2024-06-27 17:29:49,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013834396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:49,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:49,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:29:49,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612936369] [2024-06-27 17:29:49,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:49,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:29:49,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:29:49,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:29:49,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 17:29:49,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 47 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-06-27 17:29:49,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:49,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 17:29:49,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:29:52,490 INFO L124 PetriNetUnfolderBase]: 16967/24129 cut-off events. [2024-06-27 17:29:52,490 INFO L125 PetriNetUnfolderBase]: For 40962/41272 co-relation queries the response was YES. [2024-06-27 17:29:52,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75433 conditions, 24129 events. 16967/24129 cut-off events. For 40962/41272 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 156059 event pairs, 2266 based on Foata normal form. 829/24654 useless extension candidates. Maximal degree in co-relation 75407. Up to 13287 conditions per place. [2024-06-27 17:29:52,661 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 72 selfloop transitions, 6 changer transitions 1/91 dead transitions. [2024-06-27 17:29:52,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 564 flow [2024-06-27 17:29:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:29:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:29:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-27 17:29:52,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630434782608695 [2024-06-27 17:29:52,663 INFO L175 Difference]: Start difference. First operand has 74 places, 47 transitions, 210 flow. Second operand 4 states and 122 transitions. [2024-06-27 17:29:52,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 564 flow [2024-06-27 17:29:52,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 539 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 17:29:52,814 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 237 flow [2024-06-27 17:29:52,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2024-06-27 17:29:52,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-27 17:29:52,815 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 237 flow [2024-06-27 17:29:52,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-06-27 17:29:52,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:52,815 INFO L208 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] [2024-06-27 17:29:52,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:29:52,816 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:52,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1878322495, now seen corresponding path program 1 times [2024-06-27 17:29:52,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:52,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94110355] [2024-06-27 17:29:52,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:52,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:52,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:52,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94110355] [2024-06-27 17:29:52,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94110355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:52,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:52,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:29:52,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55063139] [2024-06-27 17:29:52,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:52,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:29:52,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:52,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:29:52,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:29:53,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 17:29:53,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:29:53,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:53,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 17:29:53,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:29:56,881 INFO L124 PetriNetUnfolderBase]: 23613/35089 cut-off events. [2024-06-27 17:29:56,881 INFO L125 PetriNetUnfolderBase]: For 51370/51993 co-relation queries the response was YES. [2024-06-27 17:29:57,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111861 conditions, 35089 events. 23613/35089 cut-off events. For 51370/51993 co-relation queries the response was YES. Maximal size of possible extension queue 1701. Compared 259520 event pairs, 6473 based on Foata normal form. 436/33569 useless extension candidates. Maximal degree in co-relation 111836. Up to 15432 conditions per place. [2024-06-27 17:29:57,083 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 65 selfloop transitions, 4 changer transitions 28/112 dead transitions. [2024-06-27 17:29:57,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 740 flow [2024-06-27 17:29:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:29:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:29:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 17:29:57,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6123188405797102 [2024-06-27 17:29:57,085 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 237 flow. Second operand 6 states and 169 transitions. [2024-06-27 17:29:57,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 740 flow [2024-06-27 17:29:57,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 112 transitions, 727 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 17:29:57,101 INFO L231 Difference]: Finished difference. Result has 74 places, 51 transitions, 245 flow [2024-06-27 17:29:57,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=74, PETRI_TRANSITIONS=51} [2024-06-27 17:29:57,102 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-27 17:29:57,102 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 51 transitions, 245 flow [2024-06-27 17:29:57,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:29:57,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:57,102 INFO L208 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] [2024-06-27 17:29:57,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 17:29:57,103 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:57,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:57,103 INFO L85 PathProgramCache]: Analyzing trace with hash 656230663, now seen corresponding path program 2 times [2024-06-27 17:29:57,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:57,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229322000] [2024-06-27 17:29:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:57,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:57,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:57,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229322000] [2024-06-27 17:29:57,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229322000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:57,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:57,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:29:57,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937009266] [2024-06-27 17:29:57,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:57,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:29:57,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:57,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:29:57,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:29:57,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 17:29:57,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 51 transitions, 245 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-06-27 17:29:57,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:57,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 17:29:57,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:29:59,148 INFO L124 PetriNetUnfolderBase]: 12874/18499 cut-off events. [2024-06-27 17:29:59,148 INFO L125 PetriNetUnfolderBase]: For 31036/31506 co-relation queries the response was YES. [2024-06-27 17:29:59,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58821 conditions, 18499 events. 12874/18499 cut-off events. For 31036/31506 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 114720 event pairs, 974 based on Foata normal form. 799/19185 useless extension candidates. Maximal degree in co-relation 58793. Up to 8301 conditions per place. [2024-06-27 17:29:59,441 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 89 selfloop transitions, 10 changer transitions 1/112 dead transitions. [2024-06-27 17:29:59,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 728 flow [2024-06-27 17:29:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:29:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:29:59,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-06-27 17:29:59,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6608695652173913 [2024-06-27 17:29:59,443 INFO L175 Difference]: Start difference. First operand has 74 places, 51 transitions, 245 flow. Second operand 5 states and 152 transitions. [2024-06-27 17:29:59,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 728 flow [2024-06-27 17:29:59,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 112 transitions, 714 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 17:29:59,472 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 292 flow [2024-06-27 17:29:59,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2024-06-27 17:29:59,473 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-27 17:29:59,473 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 292 flow [2024-06-27 17:29:59,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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) [2024-06-27 17:29:59,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:29:59,473 INFO L208 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] [2024-06-27 17:29:59,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 17:29:59,474 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:29:59,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:29:59,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1137245108, now seen corresponding path program 1 times [2024-06-27 17:29:59,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:29:59,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179346061] [2024-06-27 17:29:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:29:59,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:29:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:29:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:29:59,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:29:59,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179346061] [2024-06-27 17:29:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179346061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:29:59,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:29:59,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:29:59,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700506165] [2024-06-27 17:29:59,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:29:59,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:29:59,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:29:59,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:29:59,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:29:59,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 17:29:59,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:29:59,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:29:59,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 17:29:59,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:01,221 INFO L124 PetriNetUnfolderBase]: 8143/11702 cut-off events. [2024-06-27 17:30:01,221 INFO L125 PetriNetUnfolderBase]: For 23859/24369 co-relation queries the response was YES. [2024-06-27 17:30:01,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39868 conditions, 11702 events. 8143/11702 cut-off events. For 23859/24369 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 66896 event pairs, 505 based on Foata normal form. 573/12169 useless extension candidates. Maximal degree in co-relation 39841. Up to 3584 conditions per place. [2024-06-27 17:30:01,301 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 98 selfloop transitions, 14 changer transitions 1/125 dead transitions. [2024-06-27 17:30:01,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 860 flow [2024-06-27 17:30:01,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:30:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:30:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-06-27 17:30:01,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 17:30:01,302 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 292 flow. Second operand 6 states and 184 transitions. [2024-06-27 17:30:01,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 860 flow [2024-06-27 17:30:01,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 125 transitions, 830 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 17:30:01,355 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 342 flow [2024-06-27 17:30:01,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-06-27 17:30:01,357 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-27 17:30:01,358 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 342 flow [2024-06-27 17:30:01,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:30:01,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:01,358 INFO L208 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] [2024-06-27 17:30:01,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 17:30:01,359 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:01,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:01,359 INFO L85 PathProgramCache]: Analyzing trace with hash -95135315, now seen corresponding path program 1 times [2024-06-27 17:30:01,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:01,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891043283] [2024-06-27 17:30:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:01,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:01,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891043283] [2024-06-27 17:30:01,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891043283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:01,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:01,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:30:01,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796883829] [2024-06-27 17:30:01,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:01,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:30:01,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:01,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:30:01,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:30:01,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 17:30:01,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 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) [2024-06-27 17:30:01,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:01,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 17:30:01,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:02,702 INFO L124 PetriNetUnfolderBase]: 5595/7918 cut-off events. [2024-06-27 17:30:02,703 INFO L125 PetriNetUnfolderBase]: For 20009/20511 co-relation queries the response was YES. [2024-06-27 17:30:02,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28473 conditions, 7918 events. 5595/7918 cut-off events. For 20009/20511 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 42363 event pairs, 335 based on Foata normal form. 257/8069 useless extension candidates. Maximal degree in co-relation 28445. Up to 2572 conditions per place. [2024-06-27 17:30:02,744 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 81 selfloop transitions, 18 changer transitions 7/118 dead transitions. [2024-06-27 17:30:02,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 807 flow [2024-06-27 17:30:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:30:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:30:02,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-27 17:30:02,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024844720496895 [2024-06-27 17:30:02,746 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 342 flow. Second operand 7 states and 194 transitions. [2024-06-27 17:30:02,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 807 flow [2024-06-27 17:30:02,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 118 transitions, 720 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 17:30:02,841 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 317 flow [2024-06-27 17:30:02,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-06-27 17:30:02,842 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-27 17:30:02,842 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 317 flow [2024-06-27 17:30:02,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 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) [2024-06-27 17:30:02,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:02,843 INFO L208 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] [2024-06-27 17:30:02,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 17:30:02,843 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:02,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1365885838, now seen corresponding path program 1 times [2024-06-27 17:30:02,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:02,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197561141] [2024-06-27 17:30:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:02,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:03,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:03,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197561141] [2024-06-27 17:30:03,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197561141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:03,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:03,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:30:03,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399527796] [2024-06-27 17:30:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:03,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:30:03,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:30:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:30:03,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 17:30:03,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 317 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 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) [2024-06-27 17:30:03,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:03,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 17:30:03,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:04,284 INFO L124 PetriNetUnfolderBase]: 6589/10478 cut-off events. [2024-06-27 17:30:04,285 INFO L125 PetriNetUnfolderBase]: For 14658/14908 co-relation queries the response was YES. [2024-06-27 17:30:04,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32084 conditions, 10478 events. 6589/10478 cut-off events. For 14658/14908 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 72751 event pairs, 1717 based on Foata normal form. 24/9971 useless extension candidates. Maximal degree in co-relation 32060. Up to 2863 conditions per place. [2024-06-27 17:30:04,341 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 68 selfloop transitions, 4 changer transitions 27/122 dead transitions. [2024-06-27 17:30:04,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 122 transitions, 787 flow [2024-06-27 17:30:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:30:04,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:30:04,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 17:30:04,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577639751552795 [2024-06-27 17:30:04,346 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 317 flow. Second operand 7 states and 186 transitions. [2024-06-27 17:30:04,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 122 transitions, 787 flow [2024-06-27 17:30:04,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 122 transitions, 597 flow, removed 64 selfloop flow, removed 12 redundant places. [2024-06-27 17:30:04,441 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 221 flow [2024-06-27 17:30:04,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-06-27 17:30:04,443 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-27 17:30:04,443 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 221 flow [2024-06-27 17:30:04,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 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) [2024-06-27 17:30:04,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:04,443 INFO L208 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] [2024-06-27 17:30:04,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 17:30:04,444 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:04,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:04,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1774152936, now seen corresponding path program 2 times [2024-06-27 17:30:04,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:04,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851991578] [2024-06-27 17:30:04,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:04,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:06,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:06,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851991578] [2024-06-27 17:30:06,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851991578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:06,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:06,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:30:06,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741122112] [2024-06-27 17:30:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:06,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:30:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:30:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:30:06,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:30:06,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 221 flow. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:06,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:06,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:30:06,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:08,189 INFO L124 PetriNetUnfolderBase]: 4862/8071 cut-off events. [2024-06-27 17:30:08,190 INFO L125 PetriNetUnfolderBase]: For 1533/1933 co-relation queries the response was YES. [2024-06-27 17:30:08,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18260 conditions, 8071 events. 4862/8071 cut-off events. For 1533/1933 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 56344 event pairs, 1732 based on Foata normal form. 42/7529 useless extension candidates. Maximal degree in co-relation 18240. Up to 3313 conditions per place. [2024-06-27 17:30:08,229 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 87 selfloop transitions, 23 changer transitions 12/150 dead transitions. [2024-06-27 17:30:08,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 150 transitions, 745 flow [2024-06-27 17:30:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:30:08,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:30:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 327 transitions. [2024-06-27 17:30:08,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592391304347826 [2024-06-27 17:30:08,232 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 221 flow. Second operand 12 states and 327 transitions. [2024-06-27 17:30:08,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 150 transitions, 745 flow [2024-06-27 17:30:08,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 150 transitions, 717 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 17:30:08,237 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 395 flow [2024-06-27 17:30:08,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-06-27 17:30:08,237 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-27 17:30:08,237 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 395 flow [2024-06-27 17:30:08,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:08,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:08,238 INFO L208 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] [2024-06-27 17:30:08,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 17:30:08,238 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:08,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:08,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1031883238, now seen corresponding path program 3 times [2024-06-27 17:30:08,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:08,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710727105] [2024-06-27 17:30:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:08,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:08,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:08,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710727105] [2024-06-27 17:30:08,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710727105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:08,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:08,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:30:08,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283171214] [2024-06-27 17:30:08,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:08,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:30:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:08,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:30:08,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:30:08,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:30:08,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 395 flow. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2024-06-27 17:30:08,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:08,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:30:08,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:10,261 INFO L124 PetriNetUnfolderBase]: 8034/13317 cut-off events. [2024-06-27 17:30:10,261 INFO L125 PetriNetUnfolderBase]: For 13579/14176 co-relation queries the response was YES. [2024-06-27 17:30:10,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34628 conditions, 13317 events. 8034/13317 cut-off events. For 13579/14176 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 103274 event pairs, 3350 based on Foata normal form. 60/12252 useless extension candidates. Maximal degree in co-relation 34603. Up to 5817 conditions per place. [2024-06-27 17:30:10,335 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 64 selfloop transitions, 21 changer transitions 23/136 dead transitions. [2024-06-27 17:30:10,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 824 flow [2024-06-27 17:30:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:30:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:30:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-27 17:30:10,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5966183574879227 [2024-06-27 17:30:10,337 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 395 flow. Second operand 9 states and 247 transitions. [2024-06-27 17:30:10,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 824 flow [2024-06-27 17:30:10,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 136 transitions, 806 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 17:30:10,347 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 550 flow [2024-06-27 17:30:10,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2024-06-27 17:30:10,347 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2024-06-27 17:30:10,348 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 550 flow [2024-06-27 17:30:10,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 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) [2024-06-27 17:30:10,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:10,348 INFO L208 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] [2024-06-27 17:30:10,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 17:30:10,348 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:10,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2029713598, now seen corresponding path program 4 times [2024-06-27 17:30:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:10,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627223108] [2024-06-27 17:30:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627223108] [2024-06-27 17:30:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627223108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:11,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:11,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:30:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906095428] [2024-06-27 17:30:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:30:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:30:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:30:12,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:30:12,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 550 flow. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:12,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:12,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:30:12,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:13,816 INFO L124 PetriNetUnfolderBase]: 10415/17583 cut-off events. [2024-06-27 17:30:13,817 INFO L125 PetriNetUnfolderBase]: For 28695/30018 co-relation queries the response was YES. [2024-06-27 17:30:13,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48758 conditions, 17583 events. 10415/17583 cut-off events. For 28695/30018 co-relation queries the response was YES. Maximal size of possible extension queue 1374. Compared 145566 event pairs, 3671 based on Foata normal form. 155/16347 useless extension candidates. Maximal degree in co-relation 48727. Up to 5579 conditions per place. [2024-06-27 17:30:13,977 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 90 selfloop transitions, 24 changer transitions 23/165 dead transitions. [2024-06-27 17:30:13,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 165 transitions, 1180 flow [2024-06-27 17:30:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:30:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:30:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 299 transitions. [2024-06-27 17:30:13,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-06-27 17:30:13,978 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 550 flow. Second operand 11 states and 299 transitions. [2024-06-27 17:30:13,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 165 transitions, 1180 flow [2024-06-27 17:30:14,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 165 transitions, 1089 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-27 17:30:14,133 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 670 flow [2024-06-27 17:30:14,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=670, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2024-06-27 17:30:14,134 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2024-06-27 17:30:14,134 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 670 flow [2024-06-27 17:30:14,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:14,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:14,134 INFO L208 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] [2024-06-27 17:30:14,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 17:30:14,135 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:14,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash 297545784, now seen corresponding path program 5 times [2024-06-27 17:30:14,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:14,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104096571] [2024-06-27 17:30:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:14,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:15,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:15,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104096571] [2024-06-27 17:30:15,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104096571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:15,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:15,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:30:15,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713462019] [2024-06-27 17:30:15,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:15,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:30:15,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:15,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:30:15,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:30:15,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:30:15,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 670 flow. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:15,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:15,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:30:15,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:18,113 INFO L124 PetriNetUnfolderBase]: 12919/21556 cut-off events. [2024-06-27 17:30:18,113 INFO L125 PetriNetUnfolderBase]: For 42234/43220 co-relation queries the response was YES. [2024-06-27 17:30:18,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60947 conditions, 21556 events. 12919/21556 cut-off events. For 42234/43220 co-relation queries the response was YES. Maximal size of possible extension queue 1656. Compared 181534 event pairs, 4681 based on Foata normal form. 204/19856 useless extension candidates. Maximal degree in co-relation 60909. Up to 8264 conditions per place. [2024-06-27 17:30:18,402 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 106 selfloop transitions, 26 changer transitions 12/172 dead transitions. [2024-06-27 17:30:18,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 172 transitions, 1330 flow [2024-06-27 17:30:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:30:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:30:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 300 transitions. [2024-06-27 17:30:18,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928853754940712 [2024-06-27 17:30:18,403 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 670 flow. Second operand 11 states and 300 transitions. [2024-06-27 17:30:18,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 172 transitions, 1330 flow [2024-06-27 17:30:18,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 172 transitions, 1242 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 17:30:18,628 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 805 flow [2024-06-27 17:30:18,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=805, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2024-06-27 17:30:18,628 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-27 17:30:18,629 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 805 flow [2024-06-27 17:30:18,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:18,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:18,629 INFO L208 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] [2024-06-27 17:30:18,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 17:30:18,629 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:18,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:18,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1922075020, now seen corresponding path program 6 times [2024-06-27 17:30:18,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:18,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237070785] [2024-06-27 17:30:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:18,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237070785] [2024-06-27 17:30:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237070785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:20,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:20,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:30:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629803104] [2024-06-27 17:30:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:20,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:30:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:30:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:30:20,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:30:20,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 805 flow. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:20,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:20,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:30:20,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:24,101 INFO L124 PetriNetUnfolderBase]: 17343/29258 cut-off events. [2024-06-27 17:30:24,101 INFO L125 PetriNetUnfolderBase]: For 56029/57163 co-relation queries the response was YES. [2024-06-27 17:30:24,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79987 conditions, 29258 events. 17343/29258 cut-off events. For 56029/57163 co-relation queries the response was YES. Maximal size of possible extension queue 2341. Compared 259116 event pairs, 6267 based on Foata normal form. 195/26958 useless extension candidates. Maximal degree in co-relation 79949. Up to 8636 conditions per place. [2024-06-27 17:30:24,296 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 83 selfloop transitions, 14 changer transitions 61/186 dead transitions. [2024-06-27 17:30:24,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 186 transitions, 1447 flow [2024-06-27 17:30:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 17:30:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 17:30:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 333 transitions. [2024-06-27 17:30:24,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6032608695652174 [2024-06-27 17:30:24,298 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 805 flow. Second operand 12 states and 333 transitions. [2024-06-27 17:30:24,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 186 transitions, 1447 flow [2024-06-27 17:30:24,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 186 transitions, 1395 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-27 17:30:24,473 INFO L231 Difference]: Finished difference. Result has 126 places, 92 transitions, 699 flow [2024-06-27 17:30:24,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=699, PETRI_PLACES=126, PETRI_TRANSITIONS=92} [2024-06-27 17:30:24,474 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2024-06-27 17:30:24,474 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 92 transitions, 699 flow [2024-06-27 17:30:24,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:24,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:24,474 INFO L208 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] [2024-06-27 17:30:24,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 17:30:24,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:24,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1553849372, now seen corresponding path program 7 times [2024-06-27 17:30:24,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:24,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535705277] [2024-06-27 17:30:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:24,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:26,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:26,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535705277] [2024-06-27 17:30:26,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535705277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:26,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:26,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:30:26,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244530315] [2024-06-27 17:30:26,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:26,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:30:26,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:26,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:30:26,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:30:26,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:30:26,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 92 transitions, 699 flow. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:26,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:26,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:30:26,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:29,864 INFO L124 PetriNetUnfolderBase]: 12446/20818 cut-off events. [2024-06-27 17:30:29,865 INFO L125 PetriNetUnfolderBase]: For 52414/53122 co-relation queries the response was YES. [2024-06-27 17:30:29,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60839 conditions, 20818 events. 12446/20818 cut-off events. For 52414/53122 co-relation queries the response was YES. Maximal size of possible extension queue 1620. Compared 173857 event pairs, 5966 based on Foata normal form. 62/19126 useless extension candidates. Maximal degree in co-relation 60793. Up to 14427 conditions per place. [2024-06-27 17:30:30,022 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 81 selfloop transitions, 12 changer transitions 20/141 dead transitions. [2024-06-27 17:30:30,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 141 transitions, 1124 flow [2024-06-27 17:30:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:30:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:30:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 17:30:30,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630434782608695 [2024-06-27 17:30:30,026 INFO L175 Difference]: Start difference. First operand has 126 places, 92 transitions, 699 flow. Second operand 10 states and 259 transitions. [2024-06-27 17:30:30,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 141 transitions, 1124 flow [2024-06-27 17:30:30,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 141 transitions, 1062 flow, removed 17 selfloop flow, removed 16 redundant places. [2024-06-27 17:30:30,282 INFO L231 Difference]: Finished difference. Result has 110 places, 98 transitions, 757 flow [2024-06-27 17:30:30,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=757, PETRI_PLACES=110, PETRI_TRANSITIONS=98} [2024-06-27 17:30:30,283 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-27 17:30:30,283 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 98 transitions, 757 flow [2024-06-27 17:30:30,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:30,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:30,284 INFO L208 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] [2024-06-27 17:30:30,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 17:30:30,284 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:30,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:30,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1153099926, now seen corresponding path program 8 times [2024-06-27 17:30:30,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:30,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230310240] [2024-06-27 17:30:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:30,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:32,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:32,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:32,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230310240] [2024-06-27 17:30:32,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230310240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:32,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:32,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:30:32,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156752516] [2024-06-27 17:30:32,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:32,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:30:32,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:32,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:30:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:30:32,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:30:32,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 757 flow. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:32,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:32,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:30:32,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:30:35,105 INFO L124 PetriNetUnfolderBase]: 12861/21508 cut-off events. [2024-06-27 17:30:35,106 INFO L125 PetriNetUnfolderBase]: For 43214/43932 co-relation queries the response was YES. [2024-06-27 17:30:35,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60393 conditions, 21508 events. 12861/21508 cut-off events. For 43214/43932 co-relation queries the response was YES. Maximal size of possible extension queue 1686. Compared 180916 event pairs, 6284 based on Foata normal form. 104/19708 useless extension candidates. Maximal degree in co-relation 60354. Up to 14932 conditions per place. [2024-06-27 17:30:35,209 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 74 selfloop transitions, 9 changer transitions 36/147 dead transitions. [2024-06-27 17:30:35,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 147 transitions, 1171 flow [2024-06-27 17:30:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:30:35,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:30:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-06-27 17:30:35,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549407114624506 [2024-06-27 17:30:35,212 INFO L175 Difference]: Start difference. First operand has 110 places, 98 transitions, 757 flow. Second operand 11 states and 278 transitions. [2024-06-27 17:30:35,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 147 transitions, 1171 flow [2024-06-27 17:30:35,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 147 transitions, 1089 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 17:30:35,444 INFO L231 Difference]: Finished difference. Result has 118 places, 96 transitions, 707 flow [2024-06-27 17:30:35,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=707, PETRI_PLACES=118, PETRI_TRANSITIONS=96} [2024-06-27 17:30:35,444 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-27 17:30:35,445 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 96 transitions, 707 flow [2024-06-27 17:30:35,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:35,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:30:35,453 INFO L208 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] [2024-06-27 17:30:35,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 17:30:35,453 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:30:35,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:30:35,459 INFO L85 PathProgramCache]: Analyzing trace with hash -167005824, now seen corresponding path program 9 times [2024-06-27 17:30:35,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:30:35,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394268476] [2024-06-27 17:30:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:30:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:30:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:30:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:30:37,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:30:37,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394268476] [2024-06-27 17:30:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394268476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:30:37,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:30:37,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 17:30:37,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457981121] [2024-06-27 17:30:37,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:30:37,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 17:30:37,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:30:37,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 17:30:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 17:30:37,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2024-06-27 17:30:37,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 96 transitions, 707 flow. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 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) [2024-06-27 17:30:37,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:30:37,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2024-06-27 17:30:37,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand