./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix005.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/mix005.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 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:24:49,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:24:49,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:24:49,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:24:49,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:24:49,512 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:24:49,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:24:49,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:24:49,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:24:49,520 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:24:49,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:24:49,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:24:49,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:24:49,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:24:49,522 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:24:49,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:24:49,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:24:49,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:24:49,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:24:49,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:24:49,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:24:49,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:24:49,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:24:49,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:24:49,525 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:24:49,525 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:24:49,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:24:49,525 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:24:49,526 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:24:49,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:24:49,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:24:49,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:24:49,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:24:49,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:24:49,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:24:49,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:24:49,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:24:49,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:24:49,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:24:49,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:24:49,529 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:24:49,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:24:49,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:24:49,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c4e58b38f229da1b25a4c7b1c830f1f36e4dc5c1e18903f04a209f4b4cfa3c5 [2024-06-27 17:24:49,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:24:49,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:24:49,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:24:49,805 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:24:49,805 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:24:49,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix005.opt.i [2024-06-27 17:24:51,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:24:51,273 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:24:51,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix005.opt.i [2024-06-27 17:24:51,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68ebf263/eda73f40d75d46ed9a6b4b037eae30ea/FLAG63e24b45d [2024-06-27 17:24:51,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68ebf263/eda73f40d75d46ed9a6b4b037eae30ea [2024-06-27 17:24:51,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:24:51,315 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:24:51,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:24:51,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:24:51,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:24:51,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba5a73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51, skipping insertion in model container [2024-06-27 17:24:51,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,386 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:24:51,498 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/mix005.opt.i[944,957] [2024-06-27 17:24:51,693 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:24:51,705 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:24:51,714 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/mix005.opt.i[944,957] [2024-06-27 17:24:51,763 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:24:51,810 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:24:51,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51 WrapperNode [2024-06-27 17:24:51,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:24:51,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:24:51,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:24:51,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:24:51,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,877 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2024-06-27 17:24:51,877 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:24:51,878 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:24:51,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:24:51,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:24:51,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,887 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,902 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,920 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 17:24:51,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,928 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,945 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:24:51,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:24:51,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:24:51,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:24:51,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (1/1) ... [2024-06-27 17:24:51,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:24:51,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:24:52,006 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 17:24:52,020 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 17:24:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:24:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:24:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 17:24:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 17:24:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 17:24:52,053 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 17:24:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 17:24:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 17:24:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 17:24:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 17:24:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:24:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:24:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:24:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:24:52,058 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 17:24:52,209 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:24:52,211 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:24:52,490 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:24:52,491 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:24:52,594 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:24:52,595 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:24:52,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:24:52 BoogieIcfgContainer [2024-06-27 17:24:52,595 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:24:52,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:24:52,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:24:52,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:24:52,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:24:51" (1/3) ... [2024-06-27 17:24:52,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3774dac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:24:52, skipping insertion in model container [2024-06-27 17:24:52,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:24:51" (2/3) ... [2024-06-27 17:24:52,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3774dac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:24:52, skipping insertion in model container [2024-06-27 17:24:52,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:24:52" (3/3) ... [2024-06-27 17:24:52,601 INFO L112 eAbstractionObserver]: Analyzing ICFG mix005.opt.i [2024-06-27 17:24:52,609 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:24:52,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:24:52,617 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 17:24:52,617 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:24:52,649 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:24:52,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-06-27 17:24:52,709 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 17:24:52,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:24:52,714 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 97 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 17:24:52,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-06-27 17:24:52,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-06-27 17:24:52,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:24:52,728 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;@471b74d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:24:52,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 17:24:52,733 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:24:52,734 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-06-27 17:24:52,734 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:24:52,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:24:52,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:24:52,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:24:52,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:24:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1282439787, now seen corresponding path program 1 times [2024-06-27 17:24:52,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:24:52,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968577797] [2024-06-27 17:24:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:24:52,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:24:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:24:53,037 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 17:24:53,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:24:53,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968577797] [2024-06-27 17:24:53,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968577797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:24:53,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:24:53,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:24:53,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708162842] [2024-06-27 17:24:53,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:24:53,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:24:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:24:53,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:24:53,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:24:53,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 50 [2024-06-27 17:24:53,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 17:24:53,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:24:53,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 50 [2024-06-27 17:24:53,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:24:53,408 INFO L124 PetriNetUnfolderBase]: 879/1527 cut-off events. [2024-06-27 17:24:53,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:24:53,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2847 conditions, 1527 events. 879/1527 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10696 event pairs, 159 based on Foata normal form. 60/1531 useless extension candidates. Maximal degree in co-relation 2835. Up to 1009 conditions per place. [2024-06-27 17:24:53,420 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 26 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2024-06-27 17:24:53,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 178 flow [2024-06-27 17:24:53,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:24:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:24:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-06-27 17:24:53,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.76 [2024-06-27 17:24:53,431 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 114 transitions. [2024-06-27 17:24:53,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 178 flow [2024-06-27 17:24:53,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:24:53,435 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-06-27 17:24:53,437 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 17:24:53,440 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-06-27 17:24:53,440 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-06-27 17:24:53,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 17:24:53,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:24:53,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:24:53,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:24:53,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:24:53,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:24:53,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1465234930, now seen corresponding path program 1 times [2024-06-27 17:24:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:24:53,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635608087] [2024-06-27 17:24:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:24:53,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:24:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:24:53,625 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 17:24:53,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:24:53,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635608087] [2024-06-27 17:24:53,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635608087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:24:53,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:24:53,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:24:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923547405] [2024-06-27 17:24:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:24:53,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:24:53,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:24:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:24:53,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:24:53,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-06-27 17:24:53,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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 17:24:53,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:24:53,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-06-27 17:24:53,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:24:56,016 INFO L124 PetriNetUnfolderBase]: 14679/22002 cut-off events. [2024-06-27 17:24:56,016 INFO L125 PetriNetUnfolderBase]: For 846/846 co-relation queries the response was YES. [2024-06-27 17:24:56,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43142 conditions, 22002 events. 14679/22002 cut-off events. For 846/846 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 163970 event pairs, 3992 based on Foata normal form. 0/21321 useless extension candidates. Maximal degree in co-relation 43132. Up to 9077 conditions per place. [2024-06-27 17:24:56,208 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 41 selfloop transitions, 8 changer transitions 84/148 dead transitions. [2024-06-27 17:24:56,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 148 transitions, 592 flow [2024-06-27 17:24:56,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:24:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:24:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2024-06-27 17:24:56,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-06-27 17:24:56,211 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 306 transitions. [2024-06-27 17:24:56,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 148 transitions, 592 flow [2024-06-27 17:24:56,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 148 transitions, 574 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:24:56,223 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2024-06-27 17:24:56,223 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 17:24:56,224 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-06-27 17:24:56,224 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2024-06-27 17:24:56,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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 17:24:56,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:24:56,224 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 17:24:56,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:24:56,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:24:56,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:24:56,225 INFO L85 PathProgramCache]: Analyzing trace with hash -239089613, now seen corresponding path program 1 times [2024-06-27 17:24:56,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:24:56,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473016853] [2024-06-27 17:24:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:24:56,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:24:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:24:56,518 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 17:24:56,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:24:56,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473016853] [2024-06-27 17:24:56,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473016853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:24:56,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:24:56,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:24:56,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102404273] [2024-06-27 17:24:56,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:24:56,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:24:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:24:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:24:56,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:24:56,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-06-27 17:24:56,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 17:24:56,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:24:56,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-06-27 17:24:56,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:24:58,303 INFO L124 PetriNetUnfolderBase]: 10337/16473 cut-off events. [2024-06-27 17:24:58,304 INFO L125 PetriNetUnfolderBase]: For 25213/25273 co-relation queries the response was YES. [2024-06-27 17:24:58,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51067 conditions, 16473 events. 10337/16473 cut-off events. For 25213/25273 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 126479 event pairs, 1897 based on Foata normal form. 450/16837 useless extension candidates. Maximal degree in co-relation 51049. Up to 6057 conditions per place. [2024-06-27 17:24:58,602 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 50 selfloop transitions, 9 changer transitions 76/150 dead transitions. [2024-06-27 17:24:58,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 150 transitions, 1006 flow [2024-06-27 17:24:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:24:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:24:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 312 transitions. [2024-06-27 17:24:58,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-06-27 17:24:58,605 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 312 transitions. [2024-06-27 17:24:58,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 150 transitions, 1006 flow [2024-06-27 17:24:58,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 150 transitions, 856 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 17:24:58,677 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 270 flow [2024-06-27 17:24:58,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, 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=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2024-06-27 17:24:58,677 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-06-27 17:24:58,678 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 270 flow [2024-06-27 17:24:58,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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 17:24:58,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:24:58,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:24:58,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:24:58,679 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:24:58,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:24:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1980847414, now seen corresponding path program 1 times [2024-06-27 17:24:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:24:58,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523308614] [2024-06-27 17:24:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:24:58,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:24:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:24:58,816 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 17:24:58,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:24:58,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523308614] [2024-06-27 17:24:58,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523308614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:24:58,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:24:58,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:24:58,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910794396] [2024-06-27 17:24:58,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:24:58,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:24:58,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:24:58,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:24:58,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:24:58,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-06-27 17:24:58,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 17:24:58,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:24:58,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-06-27 17:24:58,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:25:00,384 INFO L124 PetriNetUnfolderBase]: 9171/14685 cut-off events. [2024-06-27 17:25:00,384 INFO L125 PetriNetUnfolderBase]: For 29889/29904 co-relation queries the response was YES. [2024-06-27 17:25:00,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47694 conditions, 14685 events. 9171/14685 cut-off events. For 29889/29904 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 109805 event pairs, 2568 based on Foata normal form. 320/14924 useless extension candidates. Maximal degree in co-relation 47669. Up to 7231 conditions per place. [2024-06-27 17:25:00,471 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 59 selfloop transitions, 18 changer transitions 62/154 dead transitions. [2024-06-27 17:25:00,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 154 transitions, 1064 flow [2024-06-27 17:25:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:25:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:25:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-06-27 17:25:00,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.644 [2024-06-27 17:25:00,473 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 270 flow. Second operand 10 states and 322 transitions. [2024-06-27 17:25:00,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 154 transitions, 1064 flow [2024-06-27 17:25:00,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 154 transitions, 1013 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 17:25:00,639 INFO L231 Difference]: Finished difference. Result has 81 places, 60 transitions, 385 flow [2024-06-27 17:25:00,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=385, PETRI_PLACES=81, PETRI_TRANSITIONS=60} [2024-06-27 17:25:00,640 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-06-27 17:25:00,640 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 60 transitions, 385 flow [2024-06-27 17:25:00,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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 17:25:00,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:25:00,641 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 17:25:00,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:25:00,641 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:25:00,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:25:00,642 INFO L85 PathProgramCache]: Analyzing trace with hash 70593429, now seen corresponding path program 1 times [2024-06-27 17:25:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:25:00,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482184572] [2024-06-27 17:25:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:25:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:25:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:25:00,813 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 17:25:00,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:25:00,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482184572] [2024-06-27 17:25:00,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482184572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:25:00,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:25:00,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:25:00,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090344467] [2024-06-27 17:25:00,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:25:00,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:25:00,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:25:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:25:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:25:00,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-06-27 17:25:00,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 60 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 17:25:00,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:25:00,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-06-27 17:25:00,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:25:02,246 INFO L124 PetriNetUnfolderBase]: 8358/13722 cut-off events. [2024-06-27 17:25:02,247 INFO L125 PetriNetUnfolderBase]: For 36578/36623 co-relation queries the response was YES. [2024-06-27 17:25:02,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48266 conditions, 13722 events. 8358/13722 cut-off events. For 36578/36623 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 104666 event pairs, 1097 based on Foata normal form. 272/13911 useless extension candidates. Maximal degree in co-relation 48236. Up to 5878 conditions per place. [2024-06-27 17:25:02,328 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 65 selfloop transitions, 17 changer transitions 64/161 dead transitions. [2024-06-27 17:25:02,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 161 transitions, 1322 flow [2024-06-27 17:25:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:25:02,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:25:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-06-27 17:25:02,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.622 [2024-06-27 17:25:02,330 INFO L175 Difference]: Start difference. First operand has 81 places, 60 transitions, 385 flow. Second operand 10 states and 311 transitions. [2024-06-27 17:25:02,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 161 transitions, 1322 flow [2024-06-27 17:25:02,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 161 transitions, 1212 flow, removed 55 selfloop flow, removed 10 redundant places. [2024-06-27 17:25:02,845 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 542 flow [2024-06-27 17:25:02,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=542, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2024-06-27 17:25:02,846 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2024-06-27 17:25:02,846 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 542 flow [2024-06-27 17:25:02,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 17:25:02,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:25:02,847 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 17:25:02,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:25:02,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:25:02,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:25:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash -983708820, now seen corresponding path program 1 times [2024-06-27 17:25:02,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:25:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395150389] [2024-06-27 17:25:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:25:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:25:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:25:03,142 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 17:25:03,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:25:03,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395150389] [2024-06-27 17:25:03,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395150389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:25:03,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:25:03,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:25:03,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287932918] [2024-06-27 17:25:03,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:25:03,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:25:03,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:25:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:25:03,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:25:03,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-06-27 17:25:03,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 542 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 17:25:03,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:25:03,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-06-27 17:25:03,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:25:05,328 INFO L124 PetriNetUnfolderBase]: 15872/24106 cut-off events. [2024-06-27 17:25:05,329 INFO L125 PetriNetUnfolderBase]: For 46052/49663 co-relation queries the response was YES. [2024-06-27 17:25:05,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70030 conditions, 24106 events. 15872/24106 cut-off events. For 46052/49663 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 179416 event pairs, 2657 based on Foata normal form. 1228/24355 useless extension candidates. Maximal degree in co-relation 69999. Up to 11958 conditions per place. [2024-06-27 17:25:05,508 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 60 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2024-06-27 17:25:05,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 105 transitions, 874 flow [2024-06-27 17:25:05,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:25:05,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:25:05,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-06-27 17:25:05,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.715 [2024-06-27 17:25:05,510 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 542 flow. Second operand 4 states and 143 transitions. [2024-06-27 17:25:05,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 105 transitions, 874 flow [2024-06-27 17:25:05,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 857 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 17:25:05,785 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 571 flow [2024-06-27 17:25:05,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=571, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-06-27 17:25:05,786 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2024-06-27 17:25:05,786 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 571 flow [2024-06-27 17:25:05,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 17:25:05,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:25:05,786 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] [2024-06-27 17:25:05,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:25:05,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:25:05,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:25:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash -801058701, now seen corresponding path program 1 times [2024-06-27 17:25:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:25:05,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483397451] [2024-06-27 17:25:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:25:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:25:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:25:05,934 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 17:25:05,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:25:05,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483397451] [2024-06-27 17:25:05,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483397451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:25:05,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:25:05,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:25:05,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966089978] [2024-06-27 17:25:05,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:25:05,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:25:05,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:25:05,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:25:05,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:25:05,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-06-27 17:25:05,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 571 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 17:25:05,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:25:05,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-06-27 17:25:05,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:25:08,849 INFO L124 PetriNetUnfolderBase]: 19464/30233 cut-off events. [2024-06-27 17:25:08,850 INFO L125 PetriNetUnfolderBase]: For 74508/75808 co-relation queries the response was YES. [2024-06-27 17:25:09,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102049 conditions, 30233 events. 19464/30233 cut-off events. For 74508/75808 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 238227 event pairs, 8564 based on Foata normal form. 409/28104 useless extension candidates. Maximal degree in co-relation 102017. Up to 13481 conditions per place. [2024-06-27 17:25:09,179 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 90 selfloop transitions, 21 changer transitions 8/139 dead transitions. [2024-06-27 17:25:09,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 139 transitions, 1093 flow [2024-06-27 17:25:09,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:25:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:25:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-06-27 17:25:09,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6275 [2024-06-27 17:25:09,182 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 571 flow. Second operand 8 states and 251 transitions. [2024-06-27 17:25:09,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 139 transitions, 1093 flow [2024-06-27 17:25:09,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 139 transitions, 1079 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 17:25:09,317 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 621 flow [2024-06-27 17:25:09,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=621, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-06-27 17:25:09,318 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-06-27 17:25:09,318 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 621 flow [2024-06-27 17:25:09,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 17:25:09,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:25:09,318 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] [2024-06-27 17:25:09,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:25:09,319 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:25:09,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:25:09,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1738332563, now seen corresponding path program 1 times [2024-06-27 17:25:09,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:25:09,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500815909] [2024-06-27 17:25:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:25:09,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:25:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:25:09,608 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 17:25:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:25:09,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500815909] [2024-06-27 17:25:09,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500815909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:25:09,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:25:09,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:25:09,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674014489] [2024-06-27 17:25:09,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:25:09,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:25:09,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:25:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:25:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:25:09,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-06-27 17:25:09,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 621 flow. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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 17:25:09,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:25:09,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-06-27 17:25:09,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:25:12,418 INFO L124 PetriNetUnfolderBase]: 19282/29544 cut-off events. [2024-06-27 17:25:12,418 INFO L125 PetriNetUnfolderBase]: For 54946/59427 co-relation queries the response was YES. [2024-06-27 17:25:12,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92025 conditions, 29544 events. 19282/29544 cut-off events. For 54946/59427 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 224681 event pairs, 2009 based on Foata normal form. 1495/30262 useless extension candidates. Maximal degree in co-relation 91991. Up to 11568 conditions per place. [2024-06-27 17:25:12,605 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 76 selfloop transitions, 10 changer transitions 3/126 dead transitions. [2024-06-27 17:25:12,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 1090 flow [2024-06-27 17:25:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:25:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:25:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-06-27 17:25:12,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.732 [2024-06-27 17:25:12,606 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 621 flow. Second operand 5 states and 183 transitions. [2024-06-27 17:25:12,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 1090 flow [2024-06-27 17:25:12,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 126 transitions, 1009 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 17:25:12,748 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 599 flow [2024-06-27 17:25:12,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-06-27 17:25:12,749 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 32 predicate places. [2024-06-27 17:25:12,749 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 599 flow [2024-06-27 17:25:12,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 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 17:25:12,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:25:12,749 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] [2024-06-27 17:25:12,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 17:25:12,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:25:12,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:25:12,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1352192167, now seen corresponding path program 1 times [2024-06-27 17:25:12,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:25:12,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253067243] [2024-06-27 17:25:12,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:25:12,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:25:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:25:12,886 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 17:25:12,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:25:12,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253067243] [2024-06-27 17:25:12,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253067243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:25:12,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:25:12,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:25:12,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489429542] [2024-06-27 17:25:12,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:25:12,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:25:12,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:25:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:25:12,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:25:12,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-06-27 17:25:12,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 599 flow. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 17:25:12,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:25:12,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-06-27 17:25:12,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:25:16,475 INFO L124 PetriNetUnfolderBase]: 20139/34710 cut-off events. [2024-06-27 17:25:16,475 INFO L125 PetriNetUnfolderBase]: For 67060/75066 co-relation queries the response was YES. [2024-06-27 17:25:16,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110069 conditions, 34710 events. 20139/34710 cut-off events. For 67060/75066 co-relation queries the response was YES. Maximal size of possible extension queue 2036. Compared 322642 event pairs, 5958 based on Foata normal form. 660/32145 useless extension candidates. Maximal degree in co-relation 110033. Up to 13081 conditions per place. [2024-06-27 17:25:16,807 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 69 selfloop transitions, 6 changer transitions 5/126 dead transitions. [2024-06-27 17:25:16,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 126 transitions, 1023 flow [2024-06-27 17:25:16,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:25:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:25:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-06-27 17:25:16,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-06-27 17:25:16,827 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 599 flow. Second operand 6 states and 198 transitions. [2024-06-27 17:25:16,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 126 transitions, 1023 flow [2024-06-27 17:25:17,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 126 transitions, 1000 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 17:25:17,300 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 653 flow [2024-06-27 17:25:17,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-06-27 17:25:17,301 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 35 predicate places. [2024-06-27 17:25:17,301 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 653 flow [2024-06-27 17:25:17,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 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 17:25:17,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:25:17,302 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] [2024-06-27 17:25:17,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 17:25:17,302 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:25:17,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:25:17,302 INFO L85 PathProgramCache]: Analyzing trace with hash -662579953, now seen corresponding path program 2 times [2024-06-27 17:25:17,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:25:17,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442305472] [2024-06-27 17:25:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:25:17,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:25:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:25:17,434 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 17:25:17,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:25:17,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442305472] [2024-06-27 17:25:17,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442305472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:25:17,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:25:17,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:25:17,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913956361] [2024-06-27 17:25:17,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:25:17,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:25:17,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:25:17,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:25:17,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:25:17,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-06-27 17:25:17,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 653 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 17:25:17,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:25:17,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-06-27 17:25:17,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:25:22,228 INFO L124 PetriNetUnfolderBase]: 25798/39117 cut-off events. [2024-06-27 17:25:22,229 INFO L125 PetriNetUnfolderBase]: For 83820/93225 co-relation queries the response was YES. [2024-06-27 17:25:22,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130112 conditions, 39117 events. 25798/39117 cut-off events. For 83820/93225 co-relation queries the response was YES. Maximal size of possible extension queue 2161. Compared 305360 event pairs, 1547 based on Foata normal form. 2003/40059 useless extension candidates. Maximal degree in co-relation 130075. Up to 12888 conditions per place. [2024-06-27 17:25:22,472 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 87 selfloop transitions, 14 changer transitions 5/144 dead transitions. [2024-06-27 17:25:22,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 144 transitions, 1205 flow [2024-06-27 17:25:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:25:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:25:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-06-27 17:25:22,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7366666666666667 [2024-06-27 17:25:22,476 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 653 flow. Second operand 6 states and 221 transitions. [2024-06-27 17:25:22,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 144 transitions, 1205 flow [2024-06-27 17:25:22,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 144 transitions, 1191 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 17:25:22,625 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 684 flow [2024-06-27 17:25:22,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-06-27 17:25:22,626 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 40 predicate places. [2024-06-27 17:25:22,626 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 684 flow [2024-06-27 17:25:22,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 17:25:22,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:25:22,626 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] [2024-06-27 17:25:22,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 17:25:22,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:25:22,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:25:22,627 INFO L85 PathProgramCache]: Analyzing trace with hash 572785135, now seen corresponding path program 1 times [2024-06-27 17:25:22,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:25:22,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183721855] [2024-06-27 17:25:22,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:25:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:25:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:25:22,795 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 17:25:22,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:25:22,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183721855] [2024-06-27 17:25:22,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183721855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:25:22,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:25:22,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:25:22,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789550155] [2024-06-27 17:25:22,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:25:22,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:25:22,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:25:22,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:25:22,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:25:22,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-06-27 17:25:22,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 684 flow. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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 17:25:22,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:25:22,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-06-27 17:25:22,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:25:26,349 INFO L124 PetriNetUnfolderBase]: 22806/34301 cut-off events. [2024-06-27 17:25:26,349 INFO L125 PetriNetUnfolderBase]: For 111539/121217 co-relation queries the response was YES. [2024-06-27 17:25:26,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128924 conditions, 34301 events. 22806/34301 cut-off events. For 111539/121217 co-relation queries the response was YES. Maximal size of possible extension queue 2158. Compared 265686 event pairs, 1459 based on Foata normal form. 1191/34463 useless extension candidates. Maximal degree in co-relation 128885. Up to 12888 conditions per place. [2024-06-27 17:25:26,545 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 72 selfloop transitions, 18 changer transitions 13/136 dead transitions. [2024-06-27 17:25:26,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1131 flow [2024-06-27 17:25:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:25:26,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:25:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-06-27 17:25:26,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6885714285714286 [2024-06-27 17:25:26,547 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 684 flow. Second operand 7 states and 241 transitions. [2024-06-27 17:25:26,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1131 flow [2024-06-27 17:25:27,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 136 transitions, 1064 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 17:25:27,271 INFO L231 Difference]: Finished difference. Result has 95 places, 77 transitions, 595 flow [2024-06-27 17:25:27,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=595, PETRI_PLACES=95, PETRI_TRANSITIONS=77} [2024-06-27 17:25:27,274 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 37 predicate places. [2024-06-27 17:25:27,275 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 77 transitions, 595 flow [2024-06-27 17:25:27,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 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 17:25:27,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:25:27,275 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, 1, 1, 1, 1] [2024-06-27 17:25:27,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 17:25:27,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:25:27,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:25:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash 756420125, now seen corresponding path program 1 times [2024-06-27 17:25:27,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:25:27,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225681580] [2024-06-27 17:25:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:25:27,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:25:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:25:27,440 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 17:25:27,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:25:27,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225681580] [2024-06-27 17:25:27,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225681580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:25:27,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:25:27,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:25:27,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140403610] [2024-06-27 17:25:27,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:25:27,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:25:27,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:25:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:25:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:25:27,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-06-27 17:25:27,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 77 transitions, 595 flow. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 17:25:27,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:25:27,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-06-27 17:25:27,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:25:29,411 INFO L124 PetriNetUnfolderBase]: 10887/20268 cut-off events. [2024-06-27 17:25:29,411 INFO L125 PetriNetUnfolderBase]: For 43850/48991 co-relation queries the response was YES. [2024-06-27 17:25:29,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65012 conditions, 20268 events. 10887/20268 cut-off events. For 43850/48991 co-relation queries the response was YES. Maximal size of possible extension queue 1661. Compared 195671 event pairs, 3191 based on Foata normal form. 248/18107 useless extension candidates. Maximal degree in co-relation 64976. Up to 6988 conditions per place. [2024-06-27 17:25:29,532 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 48 selfloop transitions, 4 changer transitions 12/112 dead transitions. [2024-06-27 17:25:29,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 112 transitions, 854 flow [2024-06-27 17:25:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:25:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:25:29,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-27 17:25:29,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2024-06-27 17:25:29,534 INFO L175 Difference]: Start difference. First operand has 95 places, 77 transitions, 595 flow. Second operand 6 states and 191 transitions. [2024-06-27 17:25:29,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 112 transitions, 854 flow [2024-06-27 17:25:30,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 112 transitions, 751 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 17:25:30,078 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 539 flow [2024-06-27 17:25:30,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=539, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2024-06-27 17:25:30,079 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 38 predicate places. [2024-06-27 17:25:30,079 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 539 flow [2024-06-27 17:25:30,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 17:25:30,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:25:30,079 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, 1, 1, 1, 1] [2024-06-27 17:25:30,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 17:25:30,080 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:25:30,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:25:30,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1834046245, now seen corresponding path program 2 times [2024-06-27 17:25:30,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:25:30,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909110658] [2024-06-27 17:25:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:25:30,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:25:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:25:30,977 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 17:25:30,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:25:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909110658] [2024-06-27 17:25:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909110658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:25:30,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:25:30,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:25:30,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556312476] [2024-06-27 17:25:30,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:25:30,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:25:30,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:25:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:25:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:25:30,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2024-06-27 17:25:30,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 539 flow. Second operand has 9 states, 9 states have (on average 26.0) internal successors, (234), 9 states have internal predecessors, (234), 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 17:25:30,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:25:30,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2024-06-27 17:25:30,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand