./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.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/mix057_power.oepc_pso.oepc_rmo.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 649d1c1aa65cb6010503451d39379fb2c9cafcc7e0f5f23661f58b5d14c46288 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:14:47,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:14:47,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:14:47,308 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:14:47,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:14:47,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:14:47,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:14:47,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:14:47,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:14:47,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:14:47,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:14:47,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:14:47,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:14:47,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:14:47,327 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:14:47,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:14:47,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:14:47,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:14:47,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:14:47,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:14:47,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:14:47,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:14:47,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:14:47,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:14:47,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:14:47,332 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:14:47,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:14:47,332 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:14:47,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:14:47,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:14:47,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:14:47,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:14:47,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:14:47,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:14:47,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:14:47,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:14:47,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:14:47,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:14:47,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:14:47,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:14:47,335 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:14:47,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:14:47,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:14:47,336 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 649d1c1aa65cb6010503451d39379fb2c9cafcc7e0f5f23661f58b5d14c46288 [2024-01-27 16:14:47,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:14:47,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:14:47,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:14:47,533 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:14:47,534 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:14:47,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:14:48,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:14:48,708 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:14:48,710 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:14:48,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6134375a4/09fabb12036245b885a9b19638318469/FLAG22489364e [2024-01-27 16:14:48,749 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6134375a4/09fabb12036245b885a9b19638318469 [2024-01-27 16:14:48,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:14:48,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:14:48,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:14:48,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:14:48,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:14:48,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:14:48" (1/1) ... [2024-01-27 16:14:48,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251c7984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:48, skipping insertion in model container [2024-01-27 16:14:48,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:14:48" (1/1) ... [2024-01-27 16:14:48,800 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:14:48,926 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/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:14:49,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:14:49,052 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:14:49,065 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/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:14:49,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:14:49,155 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:14:49,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49 WrapperNode [2024-01-27 16:14:49,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:14:49,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:14:49,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:14:49,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:14:49,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,205 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2024-01-27 16:14:49,206 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:14:49,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:14:49,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:14:49,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:14:49,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,251 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 16:14:49,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,260 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:14:49,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:14:49,266 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:14:49,266 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:14:49,267 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (1/1) ... [2024-01-27 16:14:49,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:14:49,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:14:49,301 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 16:14:49,333 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 16:14:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:14:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:14:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:14:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:14:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:14:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:14:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:14:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:14:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:14:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:14:49,356 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:14:49,356 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:14:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:14:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:14:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:14:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:14:49,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:14:49,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:14:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:14:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:14:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:14:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:14:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:14:49,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:14:49,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:14:49,360 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 16:14:49,474 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:14:49,475 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:14:49,748 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:14:49,749 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:14:49,891 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:14:49,891 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:14:49,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:14:49 BoogieIcfgContainer [2024-01-27 16:14:49,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:14:49,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:14:49,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:14:49,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:14:49,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:14:48" (1/3) ... [2024-01-27 16:14:49,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc84b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:14:49, skipping insertion in model container [2024-01-27 16:14:49,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:14:49" (2/3) ... [2024-01-27 16:14:49,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc84b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:14:49, skipping insertion in model container [2024-01-27 16:14:49,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:14:49" (3/3) ... [2024-01-27 16:14:49,900 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:14:49,906 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:14:49,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:14:49,913 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:14:49,913 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:14:49,954 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:14:49,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 48 transitions, 112 flow [2024-01-27 16:14:50,009 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-01-27 16:14:50,010 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:14:50,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-01-27 16:14:50,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 48 transitions, 112 flow [2024-01-27 16:14:50,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 44 transitions, 100 flow [2024-01-27 16:14:50,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:14:50,035 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;@418c61fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:14:50,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:14:50,039 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:14:50,039 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:14:50,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:14:50,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:50,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:14:50,040 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 16:14:50,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 12624389, now seen corresponding path program 1 times [2024-01-27 16:14:50,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:50,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497616296] [2024-01-27 16:14:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:50,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:50,382 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 16:14:50,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:50,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497616296] [2024-01-27 16:14:50,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497616296] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:50,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:50,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:14:50,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439852664] [2024-01-27 16:14:50,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:50,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:14:50,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:50,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:14:50,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:14:50,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2024-01-27 16:14:50,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 16:14:50,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:50,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2024-01-27 16:14:50,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:50,986 INFO L124 PetriNetUnfolderBase]: 2495/4172 cut-off events. [2024-01-27 16:14:50,987 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:14:50,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7748 conditions, 4172 events. 2495/4172 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 29023 event pairs, 443 based on Foata normal form. 144/4243 useless extension candidates. Maximal degree in co-relation 7736. Up to 2779 conditions per place. [2024-01-27 16:14:51,014 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 37 selfloop transitions, 2 changer transitions 2/60 dead transitions. [2024-01-27 16:14:51,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 223 flow [2024-01-27 16:14:51,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:14:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:14:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-01-27 16:14:51,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-01-27 16:14:51,025 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 100 flow. Second operand 3 states and 113 transitions. [2024-01-27 16:14:51,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 223 flow [2024-01-27 16:14:51,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:14:51,033 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 94 flow [2024-01-27 16:14:51,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-01-27 16:14:51,038 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2024-01-27 16:14:51,039 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 94 flow [2024-01-27 16:14:51,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 16:14:51,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:51,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:51,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:14:51,039 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 16:14:51,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:51,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1416933311, now seen corresponding path program 1 times [2024-01-27 16:14:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413249906] [2024-01-27 16:14:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:51,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:51,338 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 16:14:51,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:51,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413249906] [2024-01-27 16:14:51,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413249906] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:51,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:51,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:14:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969163413] [2024-01-27 16:14:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:51,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:51,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:51,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:51,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 16:14:51,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:51,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:51,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 16:14:51,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:55,437 INFO L124 PetriNetUnfolderBase]: 38072/53814 cut-off events. [2024-01-27 16:14:55,437 INFO L125 PetriNetUnfolderBase]: For 2435/2435 co-relation queries the response was YES. [2024-01-27 16:14:55,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107548 conditions, 53814 events. 38072/53814 cut-off events. For 2435/2435 co-relation queries the response was YES. Maximal size of possible extension queue 2249. Compared 376049 event pairs, 9448 based on Foata normal form. 0/52647 useless extension candidates. Maximal degree in co-relation 107538. Up to 16337 conditions per place. [2024-01-27 16:14:55,679 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 47 selfloop transitions, 8 changer transitions 103/168 dead transitions. [2024-01-27 16:14:55,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 168 transitions, 682 flow [2024-01-27 16:14:55,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:14:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:14:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 286 transitions. [2024-01-27 16:14:55,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6620370370370371 [2024-01-27 16:14:55,683 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 9 states and 286 transitions. [2024-01-27 16:14:55,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 168 transitions, 682 flow [2024-01-27 16:14:55,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 168 transitions, 664 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:14:55,686 INFO L231 Difference]: Finished difference. Result has 66 places, 47 transitions, 200 flow [2024-01-27 16:14:55,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=66, PETRI_TRANSITIONS=47} [2024-01-27 16:14:55,687 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-01-27 16:14:55,687 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 47 transitions, 200 flow [2024-01-27 16:14:55,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:55,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:55,688 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 16:14:55,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:14:55,688 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 16:14:55,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash -274701464, now seen corresponding path program 1 times [2024-01-27 16:14:55,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:55,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412830235] [2024-01-27 16:14:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:55,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:55,979 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 16:14:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:55,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412830235] [2024-01-27 16:14:55,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412830235] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:55,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:55,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:14:55,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976995037] [2024-01-27 16:14:55,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:55,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:55,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:55,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:55,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-01-27 16:14:55,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 47 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:55,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:55,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-01-27 16:14:55,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:58,888 INFO L124 PetriNetUnfolderBase]: 22823/34988 cut-off events. [2024-01-27 16:14:58,888 INFO L125 PetriNetUnfolderBase]: For 49143/51143 co-relation queries the response was YES. [2024-01-27 16:14:59,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99136 conditions, 34988 events. 22823/34988 cut-off events. For 49143/51143 co-relation queries the response was YES. Maximal size of possible extension queue 1751. Compared 275088 event pairs, 6306 based on Foata normal form. 1689/35714 useless extension candidates. Maximal degree in co-relation 99118. Up to 22057 conditions per place. [2024-01-27 16:14:59,277 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 42 selfloop transitions, 5 changer transitions 55/120 dead transitions. [2024-01-27 16:14:59,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 744 flow [2024-01-27 16:14:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:14:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:14:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-01-27 16:14:59,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-01-27 16:14:59,280 INFO L175 Difference]: Start difference. First operand has 66 places, 47 transitions, 200 flow. Second operand 7 states and 212 transitions. [2024-01-27 16:14:59,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 744 flow [2024-01-27 16:14:59,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 120 transitions, 654 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-01-27 16:14:59,466 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 243 flow [2024-01-27 16:14:59,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2024-01-27 16:14:59,468 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-01-27 16:14:59,468 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 243 flow [2024-01-27 16:14:59,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:59,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:59,469 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 16:14:59,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:14:59,469 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 16:14:59,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:59,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1711810668, now seen corresponding path program 1 times [2024-01-27 16:14:59,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:59,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576388175] [2024-01-27 16:14:59,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:59,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:59,618 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 16:14:59,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:59,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576388175] [2024-01-27 16:14:59,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576388175] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:59,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:59,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:14:59,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590211540] [2024-01-27 16:14:59,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:59,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:59,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 16:14:59,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:59,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:59,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 16:14:59,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:15:02,864 INFO L124 PetriNetUnfolderBase]: 27365/39718 cut-off events. [2024-01-27 16:15:02,864 INFO L125 PetriNetUnfolderBase]: For 82029/82055 co-relation queries the response was YES. [2024-01-27 16:15:02,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121111 conditions, 39718 events. 27365/39718 cut-off events. For 82029/82055 co-relation queries the response was YES. Maximal size of possible extension queue 1697. Compared 280918 event pairs, 1912 based on Foata normal form. 924/40593 useless extension candidates. Maximal degree in co-relation 121090. Up to 14487 conditions per place. [2024-01-27 16:15:03,099 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 68 selfloop transitions, 14 changer transitions 94/186 dead transitions. [2024-01-27 16:15:03,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 186 transitions, 1225 flow [2024-01-27 16:15:03,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:15:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:15:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-01-27 16:15:03,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-01-27 16:15:03,102 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 243 flow. Second operand 10 states and 296 transitions. [2024-01-27 16:15:03,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 186 transitions, 1225 flow [2024-01-27 16:15:03,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 186 transitions, 1202 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-27 16:15:03,574 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 404 flow [2024-01-27 16:15:03,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=404, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-01-27 16:15:03,574 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-01-27 16:15:03,574 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 404 flow [2024-01-27 16:15:03,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:15:03,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:15:03,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:15:03,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:15:03,575 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 16:15:03,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:15:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1134180801, now seen corresponding path program 1 times [2024-01-27 16:15:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:15:03,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331206094] [2024-01-27 16:15:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:15:03,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:15:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:15:03,706 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 16:15:03,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:15:03,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331206094] [2024-01-27 16:15:03,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331206094] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:15:03,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:15:03,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:15:03,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328453581] [2024-01-27 16:15:03,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:15:03,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:15:03,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:15:03,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:15:03,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:15:03,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 16:15:03,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 16:15:03,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:15:03,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 16:15:03,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:15:07,223 INFO L124 PetriNetUnfolderBase]: 25521/36939 cut-off events. [2024-01-27 16:15:07,223 INFO L125 PetriNetUnfolderBase]: For 147376/147383 co-relation queries the response was YES. [2024-01-27 16:15:07,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131197 conditions, 36939 events. 25521/36939 cut-off events. For 147376/147383 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 254516 event pairs, 4946 based on Foata normal form. 712/37631 useless extension candidates. Maximal degree in co-relation 131168. Up to 14436 conditions per place. [2024-01-27 16:15:07,469 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 74 selfloop transitions, 24 changer transitions 84/192 dead transitions. [2024-01-27 16:15:07,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 192 transitions, 1446 flow [2024-01-27 16:15:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:15:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:15:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-01-27 16:15:07,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-01-27 16:15:07,473 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 404 flow. Second operand 10 states and 296 transitions. [2024-01-27 16:15:07,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 192 transitions, 1446 flow [2024-01-27 16:15:07,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 192 transitions, 1418 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-01-27 16:15:07,850 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 638 flow [2024-01-27 16:15:07,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=638, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-01-27 16:15:07,851 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-01-27 16:15:07,851 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 638 flow [2024-01-27 16:15:07,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 16:15:07,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:15:07,851 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] [2024-01-27 16:15:07,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:15:07,852 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 16:15:07,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:15:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1262620686, now seen corresponding path program 1 times [2024-01-27 16:15:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:15:07,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992107347] [2024-01-27 16:15:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:15:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:15:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:15:07,956 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 16:15:07,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:15:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992107347] [2024-01-27 16:15:07,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992107347] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:15:07,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:15:07,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:15:07,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160961919] [2024-01-27 16:15:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:15:07,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:15:07,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:15:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:15:07,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:15:07,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 16:15:07,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 638 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 16:15:07,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:15:07,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 16:15:07,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:15:13,439 INFO L124 PetriNetUnfolderBase]: 35189/51318 cut-off events. [2024-01-27 16:15:13,439 INFO L125 PetriNetUnfolderBase]: For 275025/275030 co-relation queries the response was YES. [2024-01-27 16:15:13,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192814 conditions, 51318 events. 35189/51318 cut-off events. For 275025/275030 co-relation queries the response was YES. Maximal size of possible extension queue 2224. Compared 382114 event pairs, 5365 based on Foata normal form. 963/52270 useless extension candidates. Maximal degree in co-relation 192774. Up to 17354 conditions per place. [2024-01-27 16:15:13,795 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 76 selfloop transitions, 30 changer transitions 88/204 dead transitions. [2024-01-27 16:15:13,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 204 transitions, 1788 flow [2024-01-27 16:15:13,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:15:13,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:15:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2024-01-27 16:15:13,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6229166666666667 [2024-01-27 16:15:13,797 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 638 flow. Second operand 10 states and 299 transitions. [2024-01-27 16:15:13,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 204 transitions, 1788 flow [2024-01-27 16:15:15,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 204 transitions, 1714 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-01-27 16:15:15,224 INFO L231 Difference]: Finished difference. Result has 97 places, 77 transitions, 800 flow [2024-01-27 16:15:15,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=800, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2024-01-27 16:15:15,225 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2024-01-27 16:15:15,225 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 800 flow [2024-01-27 16:15:15,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 16:15:15,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:15:15,225 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] [2024-01-27 16:15:15,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:15:15,226 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 16:15:15,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:15:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash -334854968, now seen corresponding path program 1 times [2024-01-27 16:15:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:15:15,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869934336] [2024-01-27 16:15:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:15:15,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:15:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:15:15,365 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 16:15:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:15:15,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869934336] [2024-01-27 16:15:15,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869934336] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:15:15,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:15:15,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:15:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358260235] [2024-01-27 16:15:15,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:15:15,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:15:15,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:15:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:15:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:15:15,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-01-27 16:15:15,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 800 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 16:15:15,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:15:15,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-01-27 16:15:15,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:15:23,050 INFO L124 PetriNetUnfolderBase]: 47786/70606 cut-off events. [2024-01-27 16:15:23,050 INFO L125 PetriNetUnfolderBase]: For 508434/508439 co-relation queries the response was YES. [2024-01-27 16:15:23,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275674 conditions, 70606 events. 47786/70606 cut-off events. For 508434/508439 co-relation queries the response was YES. Maximal size of possible extension queue 3198. Compared 564277 event pairs, 7558 based on Foata normal form. 1179/71765 useless extension candidates. Maximal degree in co-relation 275627. Up to 25903 conditions per place. [2024-01-27 16:15:23,629 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 78 selfloop transitions, 31 changer transitions 103/222 dead transitions. [2024-01-27 16:15:23,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 222 transitions, 2368 flow [2024-01-27 16:15:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:15:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:15:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2024-01-27 16:15:23,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6229166666666667 [2024-01-27 16:15:23,631 INFO L175 Difference]: Start difference. First operand has 97 places, 77 transitions, 800 flow. Second operand 10 states and 299 transitions. [2024-01-27 16:15:23,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 222 transitions, 2368 flow [2024-01-27 16:15:25,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 222 transitions, 2320 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-01-27 16:15:25,290 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 1004 flow [2024-01-27 16:15:25,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1004, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2024-01-27 16:15:25,291 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-01-27 16:15:25,291 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 1004 flow [2024-01-27 16:15:25,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 16:15:25,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:15:25,292 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 16:15:25,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:15:25,292 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 16:15:25,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:15:25,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1258152798, now seen corresponding path program 1 times [2024-01-27 16:15:25,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:15:25,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609335054] [2024-01-27 16:15:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:15:25,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:15:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:15:25,376 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 16:15:25,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:15:25,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609335054] [2024-01-27 16:15:25,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609335054] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:15:25,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:15:25,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:15:25,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705569710] [2024-01-27 16:15:25,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:15:25,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:15:25,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:15:25,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:15:25,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:15:25,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-01-27 16:15:25,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 1004 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 16:15:25,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:15:25,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-01-27 16:15:25,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand