./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix007.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/mix007.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 87b62b2cd45c104fec3a3f6f97bb4a2e98408c552f26c7f9920866b9b8c9b373 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:09:47,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:09:47,338 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:09:47,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:09:47,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:09:47,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:09:47,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:09:47,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:09:47,373 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:09:47,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:09:47,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:09:47,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:09:47,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:09:47,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:09:47,379 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:09:47,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:09:47,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:09:47,380 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:09:47,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:09:47,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:09:47,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:09:47,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:09:47,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:09:47,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:09:47,382 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:09:47,382 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:09:47,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:09:47,382 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:09:47,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:09:47,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:09:47,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:09:47,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:09:47,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:09:47,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:09:47,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:09:47,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:09:47,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:09:47,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:09:47,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:09:47,386 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:09:47,386 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:09:47,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:09:47,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:09:47,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87b62b2cd45c104fec3a3f6f97bb4a2e98408c552f26c7f9920866b9b8c9b373 [2024-01-27 16:09:47,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:09:47,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:09:47,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:09:47,651 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:09:47,651 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:09:47,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix007.oepc.i [2024-01-27 16:09:48,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:09:48,913 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:09:48,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix007.oepc.i [2024-01-27 16:09:48,926 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50153551/ccd97f15d78c4018a12d1bc3921f55e9/FLAGab507caa2 [2024-01-27 16:09:48,943 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b50153551/ccd97f15d78c4018a12d1bc3921f55e9 [2024-01-27 16:09:48,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:09:48,947 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:09:48,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:09:48,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:09:48,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:09:48,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:09:48" (1/1) ... [2024-01-27 16:09:48,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da249cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:48, skipping insertion in model container [2024-01-27 16:09:48,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:09:48" (1/1) ... [2024-01-27 16:09:49,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:09:49,182 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix007.oepc.i[945,958] [2024-01-27 16:09:49,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:09:49,418 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:09:49,429 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix007.oepc.i[945,958] [2024-01-27 16:09:49,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:09:49,496 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:09:49,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49 WrapperNode [2024-01-27 16:09:49,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:09:49,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:09:49,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:09:49,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:09:49,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,561 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-01-27 16:09:49,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:09:49,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:09:49,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:09:49,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:09:49,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,601 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 16:09:49,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:09:49,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:09:49,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:09:49,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:09:49,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (1/1) ... [2024-01-27 16:09:49,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:09:49,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:09:49,654 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) [2024-01-27 16:09:49,672 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 [2024-01-27 16:09:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:09:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:09:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:09:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:09:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:09:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:09:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:09:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:09:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:09:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:09:49,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:09:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:09:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:09:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:09:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:09:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:09:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:09:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:09:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:09:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:09:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:09:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:09:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:09:49,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:09:49,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:09:49,703 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:09:49,829 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:09:49,830 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:09:50,094 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:09:50,094 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:09:50,275 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:09:50,275 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:09:50,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:09:50 BoogieIcfgContainer [2024-01-27 16:09:50,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:09:50,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:09:50,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:09:50,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:09:50,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:09:48" (1/3) ... [2024-01-27 16:09:50,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1039a5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:09:50, skipping insertion in model container [2024-01-27 16:09:50,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:09:49" (2/3) ... [2024-01-27 16:09:50,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1039a5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:09:50, skipping insertion in model container [2024-01-27 16:09:50,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:09:50" (3/3) ... [2024-01-27 16:09:50,282 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.oepc.i [2024-01-27 16:09:50,288 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:09:50,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:09:50,295 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:09:50,296 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:09:50,332 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:09:50,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:09:50,392 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-01-27 16:09:50,392 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:09:50,397 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 100 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. [2024-01-27 16:09:50,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:09:50,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-01-27 16:09:50,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:09:50,425 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;@1d151277, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:09:50,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:09:50,436 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:09:50,436 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:09:50,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:09:50,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:09:50,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:09:50,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:09:50,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:09:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash 12455637, now seen corresponding path program 1 times [2024-01-27 16:09:50,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:09:50,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023951267] [2024-01-27 16:09:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:09:50,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:09:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:09:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:09:50,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:09:50,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023951267] [2024-01-27 16:09:50,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023951267] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:09:50,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:09:50,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:09:50,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913246208] [2024-01-27 16:09:50,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:09:50,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:09:50,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:09:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:09:50,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:09:50,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-01-27 16:09:50,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:09:50,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:09:50,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-01-27 16:09:50,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:09:51,423 INFO L124 PetriNetUnfolderBase]: 2495/3960 cut-off events. [2024-01-27 16:09:51,425 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:09:51,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 3960 events. 2495/3960 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 25066 event pairs, 1647 based on Foata normal form. 135/4028 useless extension candidates. Maximal degree in co-relation 7524. Up to 2779 conditions per place. [2024-01-27 16:09:51,451 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-01-27 16:09:51,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-01-27 16:09:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:09:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:09:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-01-27 16:09:51,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-01-27 16:09:51,464 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-01-27 16:09:51,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-01-27 16:09:51,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:09:51,474 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-01-27 16:09:51,475 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} [2024-01-27 16:09:51,479 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-01-27 16:09:51,480 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-01-27 16:09:51,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:09:51,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:09:51,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:09:51,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:09:51,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:09:51,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:09:51,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1855425157, now seen corresponding path program 1 times [2024-01-27 16:09:51,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:09:51,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462024471] [2024-01-27 16:09:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:09:51,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:09:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:09:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:09:51,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:09:51,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462024471] [2024-01-27 16:09:51,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462024471] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:09:51,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:09:51,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:09:51,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607132291] [2024-01-27 16:09:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:09:51,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:09:51,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:09:51,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:09:51,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:09:51,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:09:51,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:09:51,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:09:51,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:09:51,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:09:56,112 INFO L124 PetriNetUnfolderBase]: 34962/49702 cut-off events. [2024-01-27 16:09:56,113 INFO L125 PetriNetUnfolderBase]: For 2349/2349 co-relation queries the response was YES. [2024-01-27 16:09:56,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99424 conditions, 49702 events. 34962/49702 cut-off events. For 2349/2349 co-relation queries the response was YES. Maximal size of possible extension queue 2175. Compared 353443 event pairs, 8485 based on Foata normal form. 0/48324 useless extension candidates. Maximal degree in co-relation 99414. Up to 20017 conditions per place. [2024-01-27 16:09:56,340 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 49 selfloop transitions, 8 changer transitions 102/171 dead transitions. [2024-01-27 16:09:56,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 171 transitions, 692 flow [2024-01-27 16:09:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:09:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:09:56,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 305 transitions. [2024-01-27 16:09:56,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778 [2024-01-27 16:09:56,348 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 305 transitions. [2024-01-27 16:09:56,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 171 transitions, 692 flow [2024-01-27 16:09:56,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 171 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:09:56,352 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2024-01-27 16:09:56,353 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} [2024-01-27 16:09:56,354 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-01-27 16:09:56,356 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2024-01-27 16:09:56,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:09:56,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:09:56,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:09:56,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:09:56,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:09:56,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:09:56,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2019372314, now seen corresponding path program 1 times [2024-01-27 16:09:56,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:09:56,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373632896] [2024-01-27 16:09:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:09:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:09:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:09:56,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:09:56,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:09:56,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373632896] [2024-01-27 16:09:56,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373632896] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:09:56,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:09:56,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:09:56,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772321679] [2024-01-27 16:09:56,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:09:56,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:09:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:09:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:09:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:09:56,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:09:56,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:09:56,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:09:56,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:09:56,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:00,330 INFO L124 PetriNetUnfolderBase]: 24934/36393 cut-off events. [2024-01-27 16:10:00,330 INFO L125 PetriNetUnfolderBase]: For 46494/47086 co-relation queries the response was YES. [2024-01-27 16:10:00,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106420 conditions, 36393 events. 24934/36393 cut-off events. For 46494/47086 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 259009 event pairs, 3849 based on Foata normal form. 1036/37318 useless extension candidates. Maximal degree in co-relation 106402. Up to 13478 conditions per place. [2024-01-27 16:10:00,508 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 64 selfloop transitions, 8 changer transitions 94/178 dead transitions. [2024-01-27 16:10:00,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 178 transitions, 1092 flow [2024-01-27 16:10:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:10:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:10:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 313 transitions. [2024-01-27 16:10:00,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626 [2024-01-27 16:10:00,510 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 313 transitions. [2024-01-27 16:10:00,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 178 transitions, 1092 flow [2024-01-27 16:10:00,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 178 transitions, 954 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-01-27 16:10:00,684 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 256 flow [2024-01-27 16:10:00,684 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=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=256, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2024-01-27 16:10:00,685 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-01-27 16:10:00,685 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 256 flow [2024-01-27 16:10:00,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:10:00,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:00,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:00,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:10:00,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:00,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:00,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1764075827, now seen corresponding path program 1 times [2024-01-27 16:10:00,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:00,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068071385] [2024-01-27 16:10:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:00,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:00,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068071385] [2024-01-27 16:10:00,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068071385] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:00,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:00,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:10:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486599447] [2024-01-27 16:10:00,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:00,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:10:00,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:00,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:10:00,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:10:00,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:10:00,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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) [2024-01-27 16:10:00,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:00,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:10:00,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:03,866 INFO L124 PetriNetUnfolderBase]: 21631/31485 cut-off events. [2024-01-27 16:10:03,867 INFO L125 PetriNetUnfolderBase]: For 55171/55616 co-relation queries the response was YES. [2024-01-27 16:10:03,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95198 conditions, 31485 events. 21631/31485 cut-off events. For 55171/55616 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 214518 event pairs, 3029 based on Foata normal form. 700/32014 useless extension candidates. Maximal degree in co-relation 95173. Up to 13313 conditions per place. [2024-01-27 16:10:04,044 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 63 selfloop transitions, 13 changer transitions 82/170 dead transitions. [2024-01-27 16:10:04,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 170 transitions, 1088 flow [2024-01-27 16:10:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:10:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:10:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2024-01-27 16:10:04,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.606 [2024-01-27 16:10:04,046 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 256 flow. Second operand 10 states and 303 transitions. [2024-01-27 16:10:04,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 170 transitions, 1088 flow [2024-01-27 16:10:04,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 170 transitions, 1037 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-01-27 16:10:04,934 INFO L231 Difference]: Finished difference. Result has 82 places, 60 transitions, 384 flow [2024-01-27 16:10:04,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=384, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2024-01-27 16:10:04,935 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2024-01-27 16:10:04,935 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 384 flow [2024-01-27 16:10:04,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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) [2024-01-27 16:10:04,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:04,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:04,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:10:04,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:04,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash -593523826, now seen corresponding path program 1 times [2024-01-27 16:10:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:04,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451621635] [2024-01-27 16:10:04,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:04,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451621635] [2024-01-27 16:10:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451621635] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:05,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:05,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:10:05,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113068100] [2024-01-27 16:10:05,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:05,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:10:05,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:05,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:10:05,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:10:05,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:10:05,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:10:05,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:05,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:10:05,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:09,013 INFO L124 PetriNetUnfolderBase]: 29720/44585 cut-off events. [2024-01-27 16:10:09,013 INFO L125 PetriNetUnfolderBase]: For 48585/53299 co-relation queries the response was YES. [2024-01-27 16:10:09,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112167 conditions, 44585 events. 29720/44585 cut-off events. For 48585/53299 co-relation queries the response was YES. Maximal size of possible extension queue 2008. Compared 334784 event pairs, 4615 based on Foata normal form. 1897/44751 useless extension candidates. Maximal degree in co-relation 112136. Up to 22125 conditions per place. [2024-01-27 16:10:09,280 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 59 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2024-01-27 16:10:09,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 96 transitions, 648 flow [2024-01-27 16:10:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:10:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:10:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-01-27 16:10:09,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-01-27 16:10:09,282 INFO L175 Difference]: Start difference. First operand has 82 places, 60 transitions, 384 flow. Second operand 4 states and 141 transitions. [2024-01-27 16:10:09,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 96 transitions, 648 flow [2024-01-27 16:10:09,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 600 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-01-27 16:10:09,845 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 390 flow [2024-01-27 16:10:09,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-01-27 16:10:09,846 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-01-27 16:10:09,846 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 390 flow [2024-01-27 16:10:09,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:10:09,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:09,847 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, 1] [2024-01-27 16:10:09,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:10:09,847 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:09,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:09,847 INFO L85 PathProgramCache]: Analyzing trace with hash -274570123, now seen corresponding path program 1 times [2024-01-27 16:10:09,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:09,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179857567] [2024-01-27 16:10:09,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:09,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:09,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179857567] [2024-01-27 16:10:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179857567] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:09,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:10:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137494682] [2024-01-27 16:10:09,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:09,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:10:09,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:10:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:10:09,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:10:09,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 390 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:10:09,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:09,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:10:09,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:13,372 INFO L124 PetriNetUnfolderBase]: 24658/37157 cut-off events. [2024-01-27 16:10:13,372 INFO L125 PetriNetUnfolderBase]: For 31253/34686 co-relation queries the response was YES. [2024-01-27 16:10:13,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100271 conditions, 37157 events. 24658/37157 cut-off events. For 31253/34686 co-relation queries the response was YES. Maximal size of possible extension queue 1635. Compared 272238 event pairs, 2785 based on Foata normal form. 1641/37323 useless extension candidates. Maximal degree in co-relation 100243. Up to 12842 conditions per place. [2024-01-27 16:10:13,570 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 77 selfloop transitions, 10 changer transitions 0/118 dead transitions. [2024-01-27 16:10:13,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 771 flow [2024-01-27 16:10:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:10:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:10:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-01-27 16:10:13,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2024-01-27 16:10:13,572 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 390 flow. Second operand 5 states and 181 transitions. [2024-01-27 16:10:13,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 771 flow [2024-01-27 16:10:13,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 756 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-27 16:10:13,584 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 443 flow [2024-01-27 16:10:13,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-01-27 16:10:13,588 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-01-27 16:10:13,588 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 443 flow [2024-01-27 16:10:13,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:10:13,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:13,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:10:13,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:10:13,589 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:13,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2099481877, now seen corresponding path program 1 times [2024-01-27 16:10:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:13,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576229598] [2024-01-27 16:10:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:13,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:13,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576229598] [2024-01-27 16:10:13,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576229598] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:13,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:13,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:10:13,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421393227] [2024-01-27 16:10:13,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:13,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:10:13,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:13,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:10:13,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:10:13,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:10:13,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 443 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-01-27 16:10:13,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:13,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:10:13,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:16,759 INFO L124 PetriNetUnfolderBase]: 20234/30189 cut-off events. [2024-01-27 16:10:16,760 INFO L125 PetriNetUnfolderBase]: For 45975/48229 co-relation queries the response was YES. [2024-01-27 16:10:17,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91694 conditions, 30189 events. 20234/30189 cut-off events. For 45975/48229 co-relation queries the response was YES. Maximal size of possible extension queue 1454. Compared 212924 event pairs, 2211 based on Foata normal form. 962/29791 useless extension candidates. Maximal degree in co-relation 91667. Up to 10494 conditions per place. [2024-01-27 16:10:17,085 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 91 selfloop transitions, 14 changer transitions 0/136 dead transitions. [2024-01-27 16:10:17,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 136 transitions, 914 flow [2024-01-27 16:10:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:10:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:10:17,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-01-27 16:10:17,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-01-27 16:10:17,087 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 443 flow. Second operand 6 states and 219 transitions. [2024-01-27 16:10:17,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 136 transitions, 914 flow [2024-01-27 16:10:17,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 136 transitions, 898 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 16:10:17,110 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 513 flow [2024-01-27 16:10:17,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=513, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-01-27 16:10:17,110 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2024-01-27 16:10:17,110 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 513 flow [2024-01-27 16:10:17,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-01-27 16:10:17,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:17,111 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] [2024-01-27 16:10:17,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:10:17,111 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:17,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2011263873, now seen corresponding path program 1 times [2024-01-27 16:10:17,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:17,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408196764] [2024-01-27 16:10:17,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:17,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:18,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:18,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408196764] [2024-01-27 16:10:18,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408196764] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:18,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:18,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:10:18,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108925178] [2024-01-27 16:10:18,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:18,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:10:18,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:18,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:10:18,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:10:18,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-01-27 16:10:18,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 513 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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) [2024-01-27 16:10:18,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:18,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-01-27 16:10:18,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:21,326 INFO L124 PetriNetUnfolderBase]: 19587/33862 cut-off events. [2024-01-27 16:10:21,326 INFO L125 PetriNetUnfolderBase]: For 56961/65571 co-relation queries the response was YES. [2024-01-27 16:10:21,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99034 conditions, 33862 events. 19587/33862 cut-off events. For 56961/65571 co-relation queries the response was YES. Maximal size of possible extension queue 2093. Compared 313209 event pairs, 6786 based on Foata normal form. 862/30733 useless extension candidates. Maximal degree in co-relation 99005. Up to 8619 conditions per place. [2024-01-27 16:10:21,558 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 92 selfloop transitions, 8 changer transitions 16/165 dead transitions. [2024-01-27 16:10:21,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 165 transitions, 1103 flow [2024-01-27 16:10:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:10:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:10:21,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 285 transitions. [2024-01-27 16:10:21,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-01-27 16:10:21,560 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 513 flow. Second operand 8 states and 285 transitions. [2024-01-27 16:10:21,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 165 transitions, 1103 flow [2024-01-27 16:10:22,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 165 transitions, 1072 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-01-27 16:10:22,129 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 563 flow [2024-01-27 16:10:22,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2024-01-27 16:10:22,130 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-01-27 16:10:22,130 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 563 flow [2024-01-27 16:10:22,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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) [2024-01-27 16:10:22,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:10:22,131 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] [2024-01-27 16:10:22,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:10:22,131 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:10:22,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:10:22,131 INFO L85 PathProgramCache]: Analyzing trace with hash -113294573, now seen corresponding path program 2 times [2024-01-27 16:10:22,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:10:22,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008599589] [2024-01-27 16:10:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:10:22,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:10:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:10:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:10:22,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:10:22,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008599589] [2024-01-27 16:10:22,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008599589] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:10:22,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:10:22,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:10:22,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400937397] [2024-01-27 16:10:22,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:10:22,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:10:22,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:10:22,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:10:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:10:22,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:10:22,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2024-01-27 16:10:22,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:10:22,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:10:22,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:10:27,502 INFO L124 PetriNetUnfolderBase]: 35153/52973 cut-off events. [2024-01-27 16:10:27,502 INFO L125 PetriNetUnfolderBase]: For 114454/118140 co-relation queries the response was YES.