./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix026.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/mix026.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 a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:12:13,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:12:13,220 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:12:13,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:12:13,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:12:13,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:12:13,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:12:13,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:12:13,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:12:13,258 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:12:13,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:12:13,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:12:13,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:12:13,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:12:13,260 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:12:13,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:12:13,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:12:13,261 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:12:13,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:12:13,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:12:13,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:12:13,262 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:12:13,262 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:12:13,262 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:12:13,262 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:12:13,263 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:12:13,263 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:12:13,263 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:12:13,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:12:13,264 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:12:13,264 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:12:13,265 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:12:13,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:12:13,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:12:13,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:12:13,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:12:13,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:12:13,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:12:13,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:12:13,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:12:13,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:12:13,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:12:13,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:12:13,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a107688f8a9743f96e4ba7fbbac745d7f444b48f461db6b6c74848593b202e05 [2024-01-27 16:12:13,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:12:13,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:12:13,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:12:13,490 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:12:13,490 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:12:13,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix026.oepc.i [2024-01-27 16:12:14,465 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:12:14,686 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:12:14,686 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix026.oepc.i [2024-01-27 16:12:14,710 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d260fe88/e7b764d3be474ccaacdaed81b964e21f/FLAG8a2a665c2 [2024-01-27 16:12:14,722 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d260fe88/e7b764d3be474ccaacdaed81b964e21f [2024-01-27 16:12:14,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:12:14,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:12:14,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:12:14,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:12:14,732 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:12:14,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:12:14" (1/1) ... [2024-01-27 16:12:14,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b822fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:14, skipping insertion in model container [2024-01-27 16:12:14,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:12:14" (1/1) ... [2024-01-27 16:12:14,781 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:12:14,926 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/mix026.oepc.i[945,958] [2024-01-27 16:12:15,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:12:15,092 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:12:15,108 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/mix026.oepc.i[945,958] [2024-01-27 16:12:15,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:12:15,186 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:12:15,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15 WrapperNode [2024-01-27 16:12:15,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:12:15,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:12:15,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:12:15,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:12:15,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,227 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2024-01-27 16:12:15,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:12:15,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:12:15,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:12:15,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:12:15,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,240 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,254 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 16:12:15,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,261 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,265 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:12:15,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:12:15,269 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:12:15,269 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:12:15,269 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (1/1) ... [2024-01-27 16:12:15,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:12:15,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:12:15,313 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 16:12:15,332 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 16:12:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:12:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:12:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:12:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:12:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:12:15,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:12:15,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:12:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:12:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:12:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:12:15,356 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:12:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:12:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:12:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:12:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:12:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:12:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:12:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:12:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:12:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:12:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:12:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:12:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:12:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:12:15,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:12:15,363 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 16:12:15,507 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:12:15,509 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:12:15,768 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:12:15,771 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:12:15,925 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:12:15,926 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:12:15,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:12:15 BoogieIcfgContainer [2024-01-27 16:12:15,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:12:15,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:12:15,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:12:15,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:12:15,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:12:14" (1/3) ... [2024-01-27 16:12:15,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e3dfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:12:15, skipping insertion in model container [2024-01-27 16:12:15,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:12:15" (2/3) ... [2024-01-27 16:12:15,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e3dfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:12:15, skipping insertion in model container [2024-01-27 16:12:15,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:12:15" (3/3) ... [2024-01-27 16:12:15,934 INFO L112 eAbstractionObserver]: Analyzing ICFG mix026.oepc.i [2024-01-27 16:12:15,940 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:12:15,978 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:12:15,992 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:12:15,992 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:12:16,061 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:12:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:12:16,110 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-01-27 16:12:16,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:12:16,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-01-27 16:12:16,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:12:16,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-01-27 16:12:16,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:12:16,135 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;@281884d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:12:16,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:12:16,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:12:16,138 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:12:16,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:12:16,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:16,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:12:16,140 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 16:12:16,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash 12242167, now seen corresponding path program 1 times [2024-01-27 16:12:16,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:16,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476878836] [2024-01-27 16:12:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:16,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:16,461 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 16:12:16,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:16,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476878836] [2024-01-27 16:12:16,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476878836] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:16,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:16,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:12:16,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642626780] [2024-01-27 16:12:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:16,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:12:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:12:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:12:16,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-01-27 16:12:16,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 16:12:16,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:16,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-01-27 16:12:16,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:17,163 INFO L124 PetriNetUnfolderBase]: 2495/4136 cut-off events. [2024-01-27 16:12:17,163 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:12:17,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 4136 events. 2495/4136 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 28499 event pairs, 443 based on Foata normal form. 135/4199 useless extension candidates. Maximal degree in co-relation 7700. Up to 2779 conditions per place. [2024-01-27 16:12:17,186 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 37 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2024-01-27 16:12:17,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-01-27 16:12:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:12:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:12:17,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-01-27 16:12:17,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-01-27 16:12:17,198 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 116 transitions. [2024-01-27 16:12:17,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-01-27 16:12:17,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:12:17,209 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-01-27 16:12:17,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-01-27 16:12:17,214 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-01-27 16:12:17,214 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-01-27 16:12:17,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 16:12:17,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:17,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:17,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:12:17,215 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 16:12:17,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:17,216 INFO L85 PathProgramCache]: Analyzing trace with hash -959684712, now seen corresponding path program 1 times [2024-01-27 16:12:17,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:17,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381316782] [2024-01-27 16:12:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:17,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:17,456 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 16:12:17,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:17,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381316782] [2024-01-27 16:12:17,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381316782] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:17,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:17,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:12:17,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351413718] [2024-01-27 16:12:17,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:17,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:17,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:17,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:17,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:17,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-01-27 16:12:17,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 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 16:12:17,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:17,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-01-27 16:12:17,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:20,745 INFO L124 PetriNetUnfolderBase]: 27273/38874 cut-off events. [2024-01-27 16:12:20,746 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2024-01-27 16:12:20,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77791 conditions, 38874 events. 27273/38874 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 1790. Compared 274182 event pairs, 6785 based on Foata normal form. 0/37896 useless extension candidates. Maximal degree in co-relation 77781. Up to 15294 conditions per place. [2024-01-27 16:12:20,948 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 48 selfloop transitions, 7 changer transitions 96/163 dead transitions. [2024-01-27 16:12:20,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 163 transitions, 660 flow [2024-01-27 16:12:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:12:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:12:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2024-01-27 16:12:20,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2024-01-27 16:12:20,951 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 297 transitions. [2024-01-27 16:12:20,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 163 transitions, 660 flow [2024-01-27 16:12:20,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 163 transitions, 642 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:12:20,954 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 188 flow [2024-01-27 16:12:20,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=188, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2024-01-27 16:12:20,955 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-01-27 16:12:20,956 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 188 flow [2024-01-27 16:12:20,956 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 16:12:20,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:20,956 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 16:12:20,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:12:20,957 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 16:12:20,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1708696199, now seen corresponding path program 1 times [2024-01-27 16:12:20,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:20,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474524965] [2024-01-27 16:12:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:20,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:21,110 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 16:12:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:21,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474524965] [2024-01-27 16:12:21,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474524965] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:21,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:21,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:12:21,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466567947] [2024-01-27 16:12:21,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:21,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:21,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:21,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:21,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 49 [2024-01-27 16:12:21,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:21,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:21,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 49 [2024-01-27 16:12:21,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:23,191 INFO L124 PetriNetUnfolderBase]: 14615/22394 cut-off events. [2024-01-27 16:12:23,192 INFO L125 PetriNetUnfolderBase]: For 17758/18666 co-relation queries the response was YES. [2024-01-27 16:12:23,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58963 conditions, 22394 events. 14615/22394 cut-off events. For 17758/18666 co-relation queries the response was YES. Maximal size of possible extension queue 1174. Compared 169148 event pairs, 3693 based on Foata normal form. 801/22317 useless extension candidates. Maximal degree in co-relation 58945. Up to 12061 conditions per place. [2024-01-27 16:12:23,326 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 34 selfloop transitions, 3 changer transitions 43/100 dead transitions. [2024-01-27 16:12:23,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 512 flow [2024-01-27 16:12:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:12:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:12:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-01-27 16:12:23,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297376093294461 [2024-01-27 16:12:23,328 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 188 flow. Second operand 7 states and 216 transitions. [2024-01-27 16:12:23,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 512 flow [2024-01-27 16:12:23,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 462 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-01-27 16:12:23,494 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 177 flow [2024-01-27 16:12:23,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=177, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2024-01-27 16:12:23,495 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-01-27 16:12:23,495 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 177 flow [2024-01-27 16:12:23,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:12:23,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:23,495 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 16:12:23,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:12:23,496 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 16:12:23,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:23,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1383615476, now seen corresponding path program 1 times [2024-01-27 16:12:23,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:23,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255237255] [2024-01-27 16:12:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:23,606 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 16:12:23,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255237255] [2024-01-27 16:12:23,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255237255] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:23,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:23,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:12:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122688002] [2024-01-27 16:12:23,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:23,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:12:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:12:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:12:23,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:23,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 16:12:23,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:23,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:23,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:26,840 INFO L124 PetriNetUnfolderBase]: 25615/38375 cut-off events. [2024-01-27 16:12:26,841 INFO L125 PetriNetUnfolderBase]: For 21077/26789 co-relation queries the response was YES. [2024-01-27 16:12:26,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89691 conditions, 38375 events. 25615/38375 cut-off events. For 21077/26789 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 282988 event pairs, 4262 based on Foata normal form. 1721/38960 useless extension candidates. Maximal degree in co-relation 89670. Up to 19296 conditions per place. [2024-01-27 16:12:27,058 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 56 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2024-01-27 16:12:27,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 81 transitions, 391 flow [2024-01-27 16:12:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:12:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:12:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-27 16:12:27,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2024-01-27 16:12:27,060 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 177 flow. Second operand 4 states and 137 transitions. [2024-01-27 16:12:27,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 81 transitions, 391 flow [2024-01-27 16:12:27,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 373 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-27 16:12:27,128 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 205 flow [2024-01-27 16:12:27,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=159, 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=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-01-27 16:12:27,130 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-01-27 16:12:27,130 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 205 flow [2024-01-27 16:12:27,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 16:12:27,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:27,131 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] [2024-01-27 16:12:27,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:12:27,131 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 16:12:27,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:27,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1682692199, now seen corresponding path program 1 times [2024-01-27 16:12:27,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:27,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197831407] [2024-01-27 16:12:27,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:27,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:27,314 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 16:12:27,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:27,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197831407] [2024-01-27 16:12:27,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197831407] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:27,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:27,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:12:27,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839227446] [2024-01-27 16:12:27,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:27,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:12:27,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:27,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:12:27,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:12:27,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:27,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 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 16:12:27,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:27,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:27,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:29,901 INFO L124 PetriNetUnfolderBase]: 21210/31792 cut-off events. [2024-01-27 16:12:29,902 INFO L125 PetriNetUnfolderBase]: For 17045/21659 co-relation queries the response was YES. [2024-01-27 16:12:30,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81534 conditions, 31792 events. 21210/31792 cut-off events. For 17045/21659 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 225719 event pairs, 2674 based on Foata normal form. 1497/32351 useless extension candidates. Maximal degree in co-relation 81517. Up to 11176 conditions per place. [2024-01-27 16:12:30,112 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 73 selfloop transitions, 10 changer transitions 0/102 dead transitions. [2024-01-27 16:12:30,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 524 flow [2024-01-27 16:12:30,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:12:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:12:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-01-27 16:12:30,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183673469387755 [2024-01-27 16:12:30,113 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 205 flow. Second operand 5 states and 176 transitions. [2024-01-27 16:12:30,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 524 flow [2024-01-27 16:12:30,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:12:30,118 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 270 flow [2024-01-27 16:12:30,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-01-27 16:12:30,120 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2024-01-27 16:12:30,121 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 270 flow [2024-01-27 16:12:30,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 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 16:12:30,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:30,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:30,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:12:30,126 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 16:12:30,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:30,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1314008543, now seen corresponding path program 1 times [2024-01-27 16:12:30,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:30,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086841499] [2024-01-27 16:12:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:30,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:30,577 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 16:12:30,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:30,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086841499] [2024-01-27 16:12:30,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086841499] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:30,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:30,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:12:30,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273322455] [2024-01-27 16:12:30,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:30,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:12:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:12:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:12:30,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:12:30,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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 16:12:30,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:30,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:12:30,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:34,048 INFO L124 PetriNetUnfolderBase]: 23252/38316 cut-off events. [2024-01-27 16:12:34,048 INFO L125 PetriNetUnfolderBase]: For 29320/39220 co-relation queries the response was YES. [2024-01-27 16:12:34,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100851 conditions, 38316 events. 23252/38316 cut-off events. For 29320/39220 co-relation queries the response was YES. Maximal size of possible extension queue 2234. Compared 339273 event pairs, 8729 based on Foata normal form. 653/35760 useless extension candidates. Maximal degree in co-relation 100831. Up to 17433 conditions per place. [2024-01-27 16:12:34,479 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 86 selfloop transitions, 20 changer transitions 10/148 dead transitions. [2024-01-27 16:12:34,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 148 transitions, 780 flow [2024-01-27 16:12:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:12:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:12:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2024-01-27 16:12:34,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-01-27 16:12:34,481 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 270 flow. Second operand 10 states and 325 transitions. [2024-01-27 16:12:34,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 148 transitions, 780 flow [2024-01-27 16:12:34,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 148 transitions, 765 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 16:12:34,490 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 430 flow [2024-01-27 16:12:34,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=430, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2024-01-27 16:12:34,492 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-01-27 16:12:34,493 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 430 flow [2024-01-27 16:12:34,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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 16:12:34,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:34,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:34,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:12:34,493 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 16:12:34,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1445450077, now seen corresponding path program 2 times [2024-01-27 16:12:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044582448] [2024-01-27 16:12:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:34,653 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 16:12:34,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:34,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044582448] [2024-01-27 16:12:34,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044582448] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:34,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:34,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:12:34,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977286626] [2024-01-27 16:12:34,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:34,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:34,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:34,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:34,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:34,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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 16:12:34,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:34,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:34,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:39,094 INFO L124 PetriNetUnfolderBase]: 32507/47568 cut-off events. [2024-01-27 16:12:39,094 INFO L125 PetriNetUnfolderBase]: For 121847/132107 co-relation queries the response was YES. [2024-01-27 16:12:39,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168674 conditions, 47568 events. 32507/47568 cut-off events. For 121847/132107 co-relation queries the response was YES. Maximal size of possible extension queue 2088. Compared 339428 event pairs, 2811 based on Foata normal form. 1959/47992 useless extension candidates. Maximal degree in co-relation 168647. Up to 16456 conditions per place. [2024-01-27 16:12:39,442 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 125 selfloop transitions, 14 changer transitions 23/181 dead transitions. [2024-01-27 16:12:39,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 181 transitions, 1346 flow [2024-01-27 16:12:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:12:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:12:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-01-27 16:12:39,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244897959183674 [2024-01-27 16:12:39,443 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 430 flow. Second operand 6 states and 213 transitions. [2024-01-27 16:12:39,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 181 transitions, 1346 flow [2024-01-27 16:12:39,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 181 transitions, 1344 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-27 16:12:39,568 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 449 flow [2024-01-27 16:12:39,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=449, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2024-01-27 16:12:39,569 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2024-01-27 16:12:39,569 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 449 flow [2024-01-27 16:12:39,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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 16:12:39,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:39,570 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] [2024-01-27 16:12:39,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:12:39,570 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 16:12:39,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:39,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1877327626, now seen corresponding path program 1 times [2024-01-27 16:12:39,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:39,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569482790] [2024-01-27 16:12:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:39,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:40,250 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 16:12:40,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569482790] [2024-01-27 16:12:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569482790] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:40,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:40,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:12:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131546358] [2024-01-27 16:12:40,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:40,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:12:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:40,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:12:40,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:12:40,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:12:40,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 449 flow. Second operand has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 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 16:12:40,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:40,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:12:40,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:43,958 INFO L124 PetriNetUnfolderBase]: 19444/33228 cut-off events. [2024-01-27 16:12:43,959 INFO L125 PetriNetUnfolderBase]: For 84106/99177 co-relation queries the response was YES. [2024-01-27 16:12:44,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113322 conditions, 33228 events. 19444/33228 cut-off events. For 84106/99177 co-relation queries the response was YES. Maximal size of possible extension queue 2007. Compared 299507 event pairs, 7120 based on Foata normal form. 1485/31240 useless extension candidates. Maximal degree in co-relation 113291. Up to 9614 conditions per place. [2024-01-27 16:12:44,204 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 90 selfloop transitions, 11 changer transitions 16/154 dead transitions. [2024-01-27 16:12:44,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1135 flow [2024-01-27 16:12:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:12:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:12:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-01-27 16:12:44,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-01-27 16:12:44,206 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 449 flow. Second operand 8 states and 278 transitions. [2024-01-27 16:12:44,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1135 flow [2024-01-27 16:12:44,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 154 transitions, 1072 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-01-27 16:12:44,559 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 465 flow [2024-01-27 16:12:44,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=465, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-01-27 16:12:44,560 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2024-01-27 16:12:44,560 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 465 flow [2024-01-27 16:12:44,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 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 16:12:44,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:44,560 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] [2024-01-27 16:12:44,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:12:44,560 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 16:12:44,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:44,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2022544242, now seen corresponding path program 2 times [2024-01-27 16:12:44,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:44,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307878931] [2024-01-27 16:12:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:44,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:44,728 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 16:12:44,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:44,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307878931] [2024-01-27 16:12:44,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307878931] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:44,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:44,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:12:44,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571714623] [2024-01-27 16:12:44,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:44,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:12:44,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:44,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:12:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:12:44,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:44,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 465 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 16:12:44,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:44,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:44,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:12:49,749 INFO L124 PetriNetUnfolderBase]: 35298/51881 cut-off events. [2024-01-27 16:12:49,749 INFO L125 PetriNetUnfolderBase]: For 173665/184329 co-relation queries the response was YES. [2024-01-27 16:12:50,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196850 conditions, 51881 events. 35298/51881 cut-off events. For 173665/184329 co-relation queries the response was YES. Maximal size of possible extension queue 2402. Compared 380111 event pairs, 3303 based on Foata normal form. 1169/51516 useless extension candidates. Maximal degree in co-relation 196818. Up to 19842 conditions per place. [2024-01-27 16:12:50,205 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 111 selfloop transitions, 18 changer transitions 8/156 dead transitions. [2024-01-27 16:12:50,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 156 transitions, 1223 flow [2024-01-27 16:12:50,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:12:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:12:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-01-27 16:12:50,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647230320699709 [2024-01-27 16:12:50,207 INFO L175 Difference]: Start difference. First operand has 86 places, 75 transitions, 465 flow. Second operand 7 states and 228 transitions. [2024-01-27 16:12:50,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 156 transitions, 1223 flow [2024-01-27 16:12:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 156 transitions, 1144 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-01-27 16:12:51,868 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 459 flow [2024-01-27 16:12:51,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-01-27 16:12:51,869 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2024-01-27 16:12:51,869 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 459 flow [2024-01-27 16:12:51,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 16:12:51,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:12:51,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:12:51,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 16:12:51,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:12:51,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:12:51,870 INFO L85 PathProgramCache]: Analyzing trace with hash -600517823, now seen corresponding path program 1 times [2024-01-27 16:12:51,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:12:51,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454517466] [2024-01-27 16:12:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:12:51,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:12:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:12:52,072 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 16:12:52,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:12:52,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454517466] [2024-01-27 16:12:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454517466] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:12:52,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:12:52,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:12:52,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499856545] [2024-01-27 16:12:52,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:12:52,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:12:52,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:12:52,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:12:52,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:12:52,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:12:52,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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 16:12:52,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:12:52,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:12:52,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand