./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix044_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/mix044_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 40f0a1ff0b59c9897722e1cc89a9065b61569e5c28581990c7adb84261d57e0b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:13:51,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:13:51,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:13:51,930 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:13:51,930 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:13:51,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:13:51,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:13:51,946 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:13:51,946 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:13:51,949 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:13:51,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:13:51,950 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:13:51,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:13:51,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:13:51,952 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:13:51,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:13:51,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:13:51,953 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:13:51,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:13:51,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:13:51,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:13:51,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:13:51,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:13:51,954 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:13:51,954 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:13:51,954 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:13:51,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:13:51,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:13:51,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:13:51,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:13:51,956 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:13:51,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:13:51,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:13:51,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:13:51,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:13:51,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:13:51,957 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:13:51,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:13:51,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:13:51,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:13:51,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:13:51,958 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:13:51,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:13:51,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0a1ff0b59c9897722e1cc89a9065b61569e5c28581990c7adb84261d57e0b [2024-01-27 16:13:52,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:13:52,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:13:52,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:13:52,223 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:13:52,223 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:13:52,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:13:53,247 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:13:53,415 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:13:53,416 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix044_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:13:53,428 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99efc77f/2442149a5e8448bda3e66b0109a89c95/FLAGdf5c6a4c9 [2024-01-27 16:13:53,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d99efc77f/2442149a5e8448bda3e66b0109a89c95 [2024-01-27 16:13:53,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:13:53,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:13:53,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:13:53,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:13:53,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:13:53,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e21422b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53, skipping insertion in model container [2024-01-27 16:13:53,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,496 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:13:53,608 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/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:13:53,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:13:53,778 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:13:53,789 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/mix044_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-01-27 16:13:53,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:13:53,869 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:13:53,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53 WrapperNode [2024-01-27 16:13:53,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:13:53,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:13:53,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:13:53,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:13:53,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,919 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2024-01-27 16:13:53,919 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:13:53,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:13:53,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:13:53,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:13:53,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,952 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 16:13:53,953 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,953 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,960 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:13:53,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:13:53,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:13:53,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:13:53,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (1/1) ... [2024-01-27 16:13:53,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:13:53,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:13:53,995 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 16:13:54,012 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 16:13:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:13:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:13:54,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:13:54,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:13:54,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:13:54,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:13:54,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:13:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:13:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:13:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:13:54,073 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:13:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:13:54,073 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:13:54,073 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:13:54,074 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:13:54,074 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:13:54,075 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:13:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:13:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:13:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:13:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:13:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:13:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:13:54,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:13:54,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:13:54,078 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 16:13:54,250 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:13:54,252 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:13:54,575 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:13:54,575 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:13:54,711 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:13:54,711 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:13:54,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:13:54 BoogieIcfgContainer [2024-01-27 16:13:54,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:13:54,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:13:54,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:13:54,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:13:54,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:13:53" (1/3) ... [2024-01-27 16:13:54,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42afff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:13:54, skipping insertion in model container [2024-01-27 16:13:54,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:13:53" (2/3) ... [2024-01-27 16:13:54,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42afff2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:13:54, skipping insertion in model container [2024-01-27 16:13:54,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:13:54" (3/3) ... [2024-01-27 16:13:54,718 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044_power.oepc_pso.oepc_rmo.oepc.i [2024-01-27 16:13:54,724 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:13:54,731 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:13:54,732 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:13:54,732 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:13:54,779 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:13:54,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:13:54,837 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-01-27 16:13:54,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:13:54,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-01-27 16:13:54,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-01-27 16:13:54,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-01-27 16:13:54,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:13:54,856 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;@38c04505, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:13:54,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:13:54,859 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:13:54,859 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:13:54,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:13:54,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:54,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:13:54,860 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 16:13:54,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:54,864 INFO L85 PathProgramCache]: Analyzing trace with hash 12245114, now seen corresponding path program 1 times [2024-01-27 16:13:54,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:54,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985223857] [2024-01-27 16:13:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:54,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:55,139 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 16:13:55,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:55,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985223857] [2024-01-27 16:13:55,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985223857] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:55,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:55,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:13:55,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790021805] [2024-01-27 16:13:55,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:55,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:13:55,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:55,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:13:55,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:13:55,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-01-27 16:13:55,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:55,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:55,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-01-27 16:13:55,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:13:55,774 INFO L124 PetriNetUnfolderBase]: 2495/3975 cut-off events. [2024-01-27 16:13:55,775 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:13:55,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 3975 events. 2495/3975 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24975 event pairs, 1647 based on Foata normal form. 135/4035 useless extension candidates. Maximal degree in co-relation 7539. Up to 2779 conditions per place. [2024-01-27 16:13:55,802 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-01-27 16:13:55,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-01-27 16:13:55,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:13:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:13:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-01-27 16:13:55,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-01-27 16:13:55,815 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-01-27 16:13:55,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-01-27 16:13:55,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 16:13:55,825 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-01-27 16:13:55,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-01-27 16:13:55,831 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-01-27 16:13:55,831 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-01-27 16:13:55,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:55,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:13:55,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:13:55,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:13:55,832 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 16:13:55,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:13:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1981480423, now seen corresponding path program 1 times [2024-01-27 16:13:55,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:13:55,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586183423] [2024-01-27 16:13:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:13:55,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:13:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:13:56,139 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 16:13:56,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:13:56,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586183423] [2024-01-27 16:13:56,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586183423] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:13:56,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:13:56,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:13:56,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942089488] [2024-01-27 16:13:56,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:13:56,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:13:56,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:13:56,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:13:56,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:13:56,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:13:56,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:13:56,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:13:56,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:13:56,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:00,288 INFO L124 PetriNetUnfolderBase]: 37338/53569 cut-off events. [2024-01-27 16:14:00,289 INFO L125 PetriNetUnfolderBase]: For 2337/2337 co-relation queries the response was YES. [2024-01-27 16:14:00,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106369 conditions, 53569 events. 37338/53569 cut-off events. For 2337/2337 co-relation queries the response was YES. Maximal size of possible extension queue 2267. Compared 387334 event pairs, 8394 based on Foata normal form. 0/52288 useless extension candidates. Maximal degree in co-relation 106359. Up to 18479 conditions per place. [2024-01-27 16:14:00,526 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 47 selfloop transitions, 8 changer transitions 103/170 dead transitions. [2024-01-27 16:14:00,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 170 transitions, 686 flow [2024-01-27 16:14:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 16:14:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 16:14:00,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 304 transitions. [2024-01-27 16:14:00,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755555555555556 [2024-01-27 16:14:00,530 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 304 transitions. [2024-01-27 16:14:00,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 170 transitions, 686 flow [2024-01-27 16:14:00,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 170 transitions, 668 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:14:00,533 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2024-01-27 16:14:00,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-01-27 16:14:00,534 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-01-27 16:14:00,534 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2024-01-27 16:14:00,535 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 16:14:00,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:00,535 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 16:14:00,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:14:00,535 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 16:14:00,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:00,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1893436104, now seen corresponding path program 1 times [2024-01-27 16:14:00,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:00,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883600596] [2024-01-27 16:14:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:00,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:00,668 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 16:14:00,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883600596] [2024-01-27 16:14:00,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883600596] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:00,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:00,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:14:00,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261579294] [2024-01-27 16:14:00,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:00,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:00,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:14:00,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:00,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:00,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:14:00,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:04,204 INFO L124 PetriNetUnfolderBase]: 27978/41274 cut-off events. [2024-01-27 16:14:04,205 INFO L125 PetriNetUnfolderBase]: For 59519/59568 co-relation queries the response was YES. [2024-01-27 16:14:04,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121153 conditions, 41274 events. 27978/41274 cut-off events. For 59519/59568 co-relation queries the response was YES. Maximal size of possible extension queue 1785. Compared 299640 event pairs, 1802 based on Foata normal form. 897/42015 useless extension candidates. Maximal degree in co-relation 121135. Up to 17723 conditions per place. [2024-01-27 16:14:04,444 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 60 selfloop transitions, 12 changer transitions 88/172 dead transitions. [2024-01-27 16:14:04,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 172 transitions, 1072 flow [2024-01-27 16:14:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:14:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:14:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 313 transitions. [2024-01-27 16:14:04,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626 [2024-01-27 16:14:04,448 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 313 transitions. [2024-01-27 16:14:04,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 172 transitions, 1072 flow [2024-01-27 16:14:04,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 172 transitions, 948 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-01-27 16:14:04,622 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 298 flow [2024-01-27 16:14:04,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=298, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-01-27 16:14:04,622 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-01-27 16:14:04,623 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 298 flow [2024-01-27 16:14:04,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:04,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:04,623 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 16:14:04,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:14:04,623 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 16:14:04,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2046899128, now seen corresponding path program 1 times [2024-01-27 16:14:04,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:04,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950669928] [2024-01-27 16:14:04,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:04,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:04,782 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 16:14:04,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:04,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950669928] [2024-01-27 16:14:04,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950669928] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:04,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:04,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:14:04,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948601458] [2024-01-27 16:14:04,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:04,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:04,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:04,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:04,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:04,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:14:04,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:04,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:04,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:14:04,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:08,418 INFO L124 PetriNetUnfolderBase]: 27398/40011 cut-off events. [2024-01-27 16:14:08,419 INFO L125 PetriNetUnfolderBase]: For 112764/112830 co-relation queries the response was YES. [2024-01-27 16:14:08,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131008 conditions, 40011 events. 27398/40011 cut-off events. For 112764/112830 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 285466 event pairs, 5973 based on Foata normal form. 943/40935 useless extension candidates. Maximal degree in co-relation 130983. Up to 17010 conditions per place. [2024-01-27 16:14:08,863 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 71 selfloop transitions, 18 changer transitions 92/193 dead transitions. [2024-01-27 16:14:08,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 193 transitions, 1342 flow [2024-01-27 16:14:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:14:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:14:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-01-27 16:14:08,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.644 [2024-01-27 16:14:08,866 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 298 flow. Second operand 10 states and 322 transitions. [2024-01-27 16:14:08,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 193 transitions, 1342 flow [2024-01-27 16:14:09,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 193 transitions, 1314 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-01-27 16:14:09,464 INFO L231 Difference]: Finished difference. Result has 87 places, 66 transitions, 488 flow [2024-01-27 16:14:09,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=488, PETRI_PLACES=87, PETRI_TRANSITIONS=66} [2024-01-27 16:14:09,465 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 29 predicate places. [2024-01-27 16:14:09,465 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 66 transitions, 488 flow [2024-01-27 16:14:09,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:09,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:09,466 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 16:14:09,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:14:09,466 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 16:14:09,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:09,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2046643977, now seen corresponding path program 1 times [2024-01-27 16:14:09,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:09,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856803471] [2024-01-27 16:14:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:09,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:09,624 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 16:14:09,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:09,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856803471] [2024-01-27 16:14:09,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856803471] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:09,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:09,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:14:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116004216] [2024-01-27 16:14:09,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:09,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:09,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:09,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:14:09,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 66 transitions, 488 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:09,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:09,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:14:09,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:13,276 INFO L124 PetriNetUnfolderBase]: 25079/36714 cut-off events. [2024-01-27 16:14:13,276 INFO L125 PetriNetUnfolderBase]: For 170385/170478 co-relation queries the response was YES. [2024-01-27 16:14:13,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134921 conditions, 36714 events. 25079/36714 cut-off events. For 170385/170478 co-relation queries the response was YES. Maximal size of possible extension queue 1516. Compared 257488 event pairs, 4405 based on Foata normal form. 963/37574 useless extension candidates. Maximal degree in co-relation 134885. Up to 11724 conditions per place. [2024-01-27 16:14:13,544 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 78 selfloop transitions, 13 changer transitions 98/201 dead transitions. [2024-01-27 16:14:13,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 201 transitions, 1772 flow [2024-01-27 16:14:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:14:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:14:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 312 transitions. [2024-01-27 16:14:13,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624 [2024-01-27 16:14:13,546 INFO L175 Difference]: Start difference. First operand has 87 places, 66 transitions, 488 flow. Second operand 10 states and 312 transitions. [2024-01-27 16:14:13,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 201 transitions, 1772 flow [2024-01-27 16:14:14,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 201 transitions, 1728 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-01-27 16:14:14,202 INFO L231 Difference]: Finished difference. Result has 95 places, 73 transitions, 650 flow [2024-01-27 16:14:14,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=650, PETRI_PLACES=95, PETRI_TRANSITIONS=73} [2024-01-27 16:14:14,203 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 37 predicate places. [2024-01-27 16:14:14,203 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 73 transitions, 650 flow [2024-01-27 16:14:14,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:14,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:14,203 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 16:14:14,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:14:14,204 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 16:14:14,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:14,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1896605366, now seen corresponding path program 1 times [2024-01-27 16:14:14,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:14,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515942659] [2024-01-27 16:14:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:14,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:14,292 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 16:14:14,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:14,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515942659] [2024-01-27 16:14:14,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515942659] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:14,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:14,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:14:14,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289862842] [2024-01-27 16:14:14,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:14,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:14:14,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:14,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:14:14,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:14:14,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:14:14,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 73 transitions, 650 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:14,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:14,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:14:14,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:18,901 INFO L124 PetriNetUnfolderBase]: 31366/47633 cut-off events. [2024-01-27 16:14:18,901 INFO L125 PetriNetUnfolderBase]: For 115401/119140 co-relation queries the response was YES. [2024-01-27 16:14:19,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133046 conditions, 47633 events. 31366/47633 cut-off events. For 115401/119140 co-relation queries the response was YES. Maximal size of possible extension queue 2158. Compared 369906 event pairs, 4979 based on Foata normal form. 2172/47999 useless extension candidates. Maximal degree in co-relation 133003. Up to 23921 conditions per place. [2024-01-27 16:14:19,523 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 59 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2024-01-27 16:14:19,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 109 transitions, 930 flow [2024-01-27 16:14:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:14:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:14:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-01-27 16:14:19,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-01-27 16:14:19,525 INFO L175 Difference]: Start difference. First operand has 95 places, 73 transitions, 650 flow. Second operand 4 states and 141 transitions. [2024-01-27 16:14:19,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 109 transitions, 930 flow [2024-01-27 16:14:20,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 109 transitions, 886 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-01-27 16:14:20,448 INFO L231 Difference]: Finished difference. Result has 86 places, 78 transitions, 660 flow [2024-01-27 16:14:20,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=660, PETRI_PLACES=86, PETRI_TRANSITIONS=78} [2024-01-27 16:14:20,448 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-01-27 16:14:20,448 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 78 transitions, 660 flow [2024-01-27 16:14:20,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:20,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:20,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:20,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:14:20,449 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 16:14:20,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash 507039405, now seen corresponding path program 1 times [2024-01-27 16:14:20,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:20,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96447419] [2024-01-27 16:14:20,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:20,639 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 16:14:20,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:20,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96447419] [2024-01-27 16:14:20,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96447419] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:20,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:20,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:14:20,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733795715] [2024-01-27 16:14:20,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:20,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:14:20,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:14:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:14:20,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-01-27 16:14:20,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 78 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:20,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:20,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-01-27 16:14:20,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:14:27,994 INFO L124 PetriNetUnfolderBase]: 47766/71511 cut-off events. [2024-01-27 16:14:27,994 INFO L125 PetriNetUnfolderBase]: For 263950/267391 co-relation queries the response was YES. [2024-01-27 16:14:28,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246060 conditions, 71511 events. 47766/71511 cut-off events. For 263950/267391 co-relation queries the response was YES. Maximal size of possible extension queue 3033. Compared 576953 event pairs, 15527 based on Foata normal form. 1256/68880 useless extension candidates. Maximal degree in co-relation 246021. Up to 23503 conditions per place. [2024-01-27 16:14:28,611 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 132 selfloop transitions, 42 changer transitions 14/205 dead transitions. [2024-01-27 16:14:28,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 205 transitions, 1792 flow [2024-01-27 16:14:28,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:14:28,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:14:28,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 313 transitions. [2024-01-27 16:14:28,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626 [2024-01-27 16:14:28,613 INFO L175 Difference]: Start difference. First operand has 86 places, 78 transitions, 660 flow. Second operand 10 states and 313 transitions. [2024-01-27 16:14:28,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 205 transitions, 1792 flow [2024-01-27 16:14:29,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 205 transitions, 1746 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-01-27 16:14:29,228 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 1093 flow [2024-01-27 16:14:29,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1093, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-01-27 16:14:29,229 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 40 predicate places. [2024-01-27 16:14:29,229 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 1093 flow [2024-01-27 16:14:29,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:29,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:14:29,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:14:29,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:14:29,230 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 16:14:29,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:14:29,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1681968942, now seen corresponding path program 1 times [2024-01-27 16:14:29,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:14:29,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923653395] [2024-01-27 16:14:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:14:29,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:14:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:14:29,327 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 16:14:29,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:14:29,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923653395] [2024-01-27 16:14:29,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923653395] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:14:29,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:14:29,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:14:29,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011252653] [2024-01-27 16:14:29,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:14:29,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:14:29,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:14:29,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:14:29,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:14:29,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-01-27 16:14:29,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 1093 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:14:29,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:14:29,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-01-27 16:14:29,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand