./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.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/mix046.oepc.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 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:27:35,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:27:35,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:27:35,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:27:35,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:27:35,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:27:35,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:27:35,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:27:35,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:27:35,992 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:27:35,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:27:35,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:27:35,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:27:35,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:27:35,996 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:27:35,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:27:35,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:27:35,997 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:27:35,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:27:35,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:27:35,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:27:35,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:27:35,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:27:35,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:27:35,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:27:35,999 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:27:35,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:27:35,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:27:36,000 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:27:36,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:27:36,001 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:27:36,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:27:36,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:27:36,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:27:36,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:27:36,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:27:36,002 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:27:36,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:27:36,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:27:36,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:27:36,003 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:27:36,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:27:36,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:27:36,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 [2024-06-27 17:27:36,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:27:36,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:27:36,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:27:36,275 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:27:36,276 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:27:36,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-06-27 17:27:37,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:27:37,610 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:27:37,611 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix046.oepc.i [2024-06-27 17:27:37,623 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ed72b66/47b3045c2a934a7795a89389d03f50a6/FLAGd7df80db7 [2024-06-27 17:27:37,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ed72b66/47b3045c2a934a7795a89389d03f50a6 [2024-06-27 17:27:37,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:27:37,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:27:37,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:27:37,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:27:37,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:27:37,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:27:37" (1/1) ... [2024-06-27 17:27:37,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4968081b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:37, skipping insertion in model container [2024-06-27 17:27:37,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:27:37" (1/1) ... [2024-06-27 17:27:37,680 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:27:37,897 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/mix046.oepc.i[945,958] [2024-06-27 17:27:38,072 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:27:38,096 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:27:38,105 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/mix046.oepc.i[945,958] [2024-06-27 17:27:38,146 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:27:38,185 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:27:38,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38 WrapperNode [2024-06-27 17:27:38,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:27:38,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:27:38,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:27:38,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:27:38,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,256 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2024-06-27 17:27:38,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:27:38,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:27:38,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:27:38,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:27:38,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,301 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 17:27:38,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,326 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:27:38,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:27:38,332 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:27:38,332 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:27:38,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (1/1) ... [2024-06-27 17:27:38,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:27:38,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:27:38,357 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 17:27:38,377 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 17:27:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:27:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:27:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 17:27:38,430 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 17:27:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 17:27:38,430 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 17:27:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 17:27:38,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 17:27:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 17:27:38,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 17:27:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:27:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:27:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:27:38,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:27:38,467 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 17:27:38,599 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:27:38,601 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:27:38,832 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:27:38,833 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:27:38,975 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:27:38,975 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:27:38,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:27:38 BoogieIcfgContainer [2024-06-27 17:27:38,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:27:38,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:27:38,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:27:38,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:27:38,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:27:37" (1/3) ... [2024-06-27 17:27:38,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47de38a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:27:38, skipping insertion in model container [2024-06-27 17:27:38,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:27:38" (2/3) ... [2024-06-27 17:27:38,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47de38a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:27:38, skipping insertion in model container [2024-06-27 17:27:38,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:27:38" (3/3) ... [2024-06-27 17:27:38,986 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2024-06-27 17:27:38,994 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:27:39,001 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:27:39,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 17:27:39,002 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:27:39,048 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:27:39,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-06-27 17:27:39,112 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 17:27:39,112 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:27:39,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-06-27 17:27:39,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-06-27 17:27:39,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-06-27 17:27:39,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:27:39,143 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;@4274f127, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:27:39,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 17:27:39,148 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:27:39,148 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 17:27:39,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:27:39,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:27:39,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-06-27 17:27:39,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:27:39,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:27:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash 11875706, now seen corresponding path program 1 times [2024-06-27 17:27:39,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:27:39,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463133324] [2024-06-27 17:27:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:27:39,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:27:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:27:39,457 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 17:27:39,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:27:39,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463133324] [2024-06-27 17:27:39,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463133324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:27:39,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:27:39,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:27:39,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501421275] [2024-06-27 17:27:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:27:39,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:27:39,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:27:39,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:27:39,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:27:39,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-06-27 17:27:39,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:27:39,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:27:39,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-06-27 17:27:39,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:27:40,076 INFO L124 PetriNetUnfolderBase]: 2495/3975 cut-off events. [2024-06-27 17:27:40,077 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 17:27:40,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 3975 events. 2495/3975 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 25011 event pairs, 1647 based on Foata normal form. 135/4048 useless extension candidates. Maximal degree in co-relation 7539. Up to 2779 conditions per place. [2024-06-27 17:27:40,105 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-06-27 17:27:40,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-06-27 17:27:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:27:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:27:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-27 17:27:40,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-06-27 17:27:40,117 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-06-27 17:27:40,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-06-27 17:27:40,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:27:40,127 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-06-27 17:27:40,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-27 17:27:40,132 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-06-27 17:27:40,132 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-06-27 17:27:40,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:27:40,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:27:40,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:27:40,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:27:40,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:27:40,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:27:40,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1594122599, now seen corresponding path program 1 times [2024-06-27 17:27:40,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:27:40,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646342178] [2024-06-27 17:27:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:27:40,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:27:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:27:40,392 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 17:27:40,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:27:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646342178] [2024-06-27 17:27:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646342178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:27:40,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:27:40,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:27:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311765363] [2024-06-27 17:27:40,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:27:40,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:27:40,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:27:40,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:27:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:27:40,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 17:27:40,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 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 17:27:40,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:27:40,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 17:27:40,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:27:45,096 INFO L124 PetriNetUnfolderBase]: 36977/53053 cut-off events. [2024-06-27 17:27:45,097 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2024-06-27 17:27:45,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105374 conditions, 53053 events. 36977/53053 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 2231. Compared 384552 event pairs, 8645 based on Foata normal form. 0/51713 useless extension candidates. Maximal degree in co-relation 105364. Up to 17928 conditions per place. [2024-06-27 17:27:45,372 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 49 selfloop transitions, 8 changer transitions 103/172 dead transitions. [2024-06-27 17:27:45,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 172 transitions, 696 flow [2024-06-27 17:27:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:27:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:27:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2024-06-27 17:27:45,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-06-27 17:27:45,380 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 306 transitions. [2024-06-27 17:27:45,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 172 transitions, 696 flow [2024-06-27 17:27:45,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 172 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:27:45,385 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2024-06-27 17:27:45,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-06-27 17:27:45,386 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-06-27 17:27:45,386 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2024-06-27 17:27:45,387 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 17:27:45,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:27:45,388 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 17:27:45,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:27:45,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:27:45,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:27:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1919637050, now seen corresponding path program 1 times [2024-06-27 17:27:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:27:45,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862416619] [2024-06-27 17:27:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:27:45,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:27:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:27:45,581 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 17:27:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:27:45,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862416619] [2024-06-27 17:27:45,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862416619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:27:45,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:27:45,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:27:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461481762] [2024-06-27 17:27:45,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:27:45,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:27:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:27:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:27:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:27:45,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 17:27:45,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 17:27:45,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:27:45,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 17:27:45,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:27:48,825 INFO L124 PetriNetUnfolderBase]: 26369/38534 cut-off events. [2024-06-27 17:27:48,826 INFO L125 PetriNetUnfolderBase]: For 55429/55532 co-relation queries the response was YES. [2024-06-27 17:27:48,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112834 conditions, 38534 events. 26369/38534 cut-off events. For 55429/55532 co-relation queries the response was YES. Maximal size of possible extension queue 1568. Compared 275286 event pairs, 4465 based on Foata normal form. 1102/39513 useless extension candidates. Maximal degree in co-relation 112816. Up to 12135 conditions per place. [2024-06-27 17:27:49,198 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 61 selfloop transitions, 8 changer transitions 98/179 dead transitions. [2024-06-27 17:27:49,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 179 transitions, 1132 flow [2024-06-27 17:27:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:27:49,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:27:49,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 312 transitions. [2024-06-27 17:27:49,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-06-27 17:27:49,200 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 312 transitions. [2024-06-27 17:27:49,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 179 transitions, 1132 flow [2024-06-27 17:27:49,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 179 transitions, 998 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-27 17:27:49,365 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 260 flow [2024-06-27 17:27:49,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=260, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2024-06-27 17:27:49,366 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-06-27 17:27:49,366 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 260 flow [2024-06-27 17:27:49,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 17:27:49,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:27:49,366 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 17:27:49,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:27:49,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:27:49,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:27:49,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1174125915, now seen corresponding path program 1 times [2024-06-27 17:27:49,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:27:49,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721347322] [2024-06-27 17:27:49,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:27:49,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:27:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:27:49,487 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 17:27:49,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:27:49,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721347322] [2024-06-27 17:27:49,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721347322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:27:49,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:27:49,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:27:49,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058829775] [2024-06-27 17:27:49,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:27:49,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:27:49,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:27:49,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:27:49,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:27:49,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-06-27 17:27:49,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 17:27:49,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:27:49,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-06-27 17:27:49,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:27:52,238 INFO L124 PetriNetUnfolderBase]: 18612/29025 cut-off events. [2024-06-27 17:27:52,239 INFO L125 PetriNetUnfolderBase]: For 63388/64719 co-relation queries the response was YES. [2024-06-27 17:27:52,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85568 conditions, 29025 events. 18612/29025 cut-off events. For 63388/64719 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 229054 event pairs, 5986 based on Foata normal form. 1193/29484 useless extension candidates. Maximal degree in co-relation 85543. Up to 19755 conditions per place. [2024-06-27 17:27:52,521 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 43 selfloop transitions, 6 changer transitions 49/120 dead transitions. [2024-06-27 17:27:52,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 766 flow [2024-06-27 17:27:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:27:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:27:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-06-27 17:27:52,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-06-27 17:27:52,523 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 260 flow. Second operand 7 states and 226 transitions. [2024-06-27 17:27:52,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 766 flow [2024-06-27 17:27:53,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 739 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 17:27:53,023 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 335 flow [2024-06-27 17:27:53,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2024-06-27 17:27:53,024 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2024-06-27 17:27:53,025 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 335 flow [2024-06-27 17:27:53,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 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 17:27:53,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:27:53,025 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 17:27:53,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:27:53,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:27:53,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:27:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash -14116228, now seen corresponding path program 1 times [2024-06-27 17:27:53,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:27:53,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126254065] [2024-06-27 17:27:53,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:27:53,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:27:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:27:53,144 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 17:27:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:27:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126254065] [2024-06-27 17:27:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126254065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:27:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:27:53,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:27:53,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276371618] [2024-06-27 17:27:53,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:27:53,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:27:53,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:27:53,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:27:53,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:27:53,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-06-27 17:27:53,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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 17:27:53,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:27:53,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-06-27 17:27:53,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:27:57,143 INFO L124 PetriNetUnfolderBase]: 30154/45769 cut-off events. [2024-06-27 17:27:57,143 INFO L125 PetriNetUnfolderBase]: For 48308/55779 co-relation queries the response was YES. [2024-06-27 17:27:57,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115874 conditions, 45769 events. 30154/45769 cut-off events. For 48308/55779 co-relation queries the response was YES. Maximal size of possible extension queue 1888. Compared 351704 event pairs, 4751 based on Foata normal form. 1987/46398 useless extension candidates. Maximal degree in co-relation 115845. Up to 22785 conditions per place. [2024-06-27 17:27:57,664 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 56 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2024-06-27 17:27:57,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 557 flow [2024-06-27 17:27:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:27:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:27:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-06-27 17:27:57,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-06-27 17:27:57,666 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 335 flow. Second operand 4 states and 141 transitions. [2024-06-27 17:27:57,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 557 flow [2024-06-27 17:27:57,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 519 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 17:27:57,784 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 343 flow [2024-06-27 17:27:57,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-06-27 17:27:57,785 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2024-06-27 17:27:57,785 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 343 flow [2024-06-27 17:27:57,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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 17:27:57,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:27:57,785 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] [2024-06-27 17:27:57,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:27:57,786 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:27:57,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:27:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash -491060852, now seen corresponding path program 1 times [2024-06-27 17:27:57,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:27:57,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675263018] [2024-06-27 17:27:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:27:57,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:27:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:27:57,911 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 17:27:57,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:27:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675263018] [2024-06-27 17:27:57,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675263018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:27:57,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:27:57,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:27:57,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075994860] [2024-06-27 17:27:57,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:27:57,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:27:57,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:27:57,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:27:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:27:57,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-06-27 17:27:57,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 17:27:57,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:27:57,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-06-27 17:27:57,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:28:05,291 INFO L124 PetriNetUnfolderBase]: 50818/75800 cut-off events. [2024-06-27 17:28:05,292 INFO L125 PetriNetUnfolderBase]: For 115800/119897 co-relation queries the response was YES. [2024-06-27 17:28:05,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221535 conditions, 75800 events. 50818/75800 cut-off events. For 115800/119897 co-relation queries the response was YES. Maximal size of possible extension queue 3185. Compared 612473 event pairs, 12824 based on Foata normal form. 1477/73129 useless extension candidates. Maximal degree in co-relation 221509. Up to 28016 conditions per place. [2024-06-27 17:28:05,828 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 145 selfloop transitions, 30 changer transitions 0/192 dead transitions. [2024-06-27 17:28:05,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 192 transitions, 1221 flow [2024-06-27 17:28:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:28:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:28:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 319 transitions. [2024-06-27 17:28:05,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638 [2024-06-27 17:28:05,831 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 343 flow. Second operand 10 states and 319 transitions. [2024-06-27 17:28:05,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 192 transitions, 1221 flow [2024-06-27 17:28:06,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 192 transitions, 1213 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 17:28:06,056 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 650 flow [2024-06-27 17:28:06,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=650, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2024-06-27 17:28:06,057 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2024-06-27 17:28:06,057 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 650 flow [2024-06-27 17:28:06,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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 17:28:06,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:28:06,058 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] [2024-06-27 17:28:06,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:28:06,058 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:28:06,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:28:06,059 INFO L85 PathProgramCache]: Analyzing trace with hash -747275404, now seen corresponding path program 1 times [2024-06-27 17:28:06,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:28:06,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082061390] [2024-06-27 17:28:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:28:06,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:28:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:28:06,159 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 17:28:06,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:28:06,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082061390] [2024-06-27 17:28:06,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082061390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:28:06,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:28:06,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:28:06,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2801250] [2024-06-27 17:28:06,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:28:06,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:28:06,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:28:06,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:28:06,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:28:06,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-06-27 17:28:06,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 650 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 17:28:06,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:28:06,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-06-27 17:28:06,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand