./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix017.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/mix017.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 a97b4f259d777d70ea3df756a2f94b2605f52fea9df0872361c6911477a44448 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:10:59,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:10:59,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:10:59,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:10:59,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:10:59,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:10:59,530 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:10:59,530 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:10:59,531 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:10:59,534 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:10:59,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:10:59,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:10:59,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:10:59,536 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:10:59,536 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:10:59,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:10:59,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:10:59,536 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:10:59,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:10:59,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:10:59,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:10:59,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:10:59,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:10:59,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:10:59,538 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:10:59,538 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:10:59,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:10:59,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:10:59,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:10:59,539 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:10:59,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:10:59,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:10:59,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:10:59,540 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:10:59,540 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:10:59,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:10:59,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:10:59,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:10:59,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:10:59,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:10:59,541 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:10:59,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:10:59,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:10:59,542 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a97b4f259d777d70ea3df756a2f94b2605f52fea9df0872361c6911477a44448 [2024-01-27 16:10:59,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:10:59,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:10:59,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:10:59,766 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:10:59,767 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:10:59,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix017.oepc.i [2024-01-27 16:11:00,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:11:00,921 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:11:00,922 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017.oepc.i [2024-01-27 16:11:00,938 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e25b171/8582dd81ce204c0c93e6ca0d13e857d4/FLAGa579eb9f2 [2024-01-27 16:11:00,949 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1e25b171/8582dd81ce204c0c93e6ca0d13e857d4 [2024-01-27 16:11:00,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:11:00,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:11:00,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:11:00,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:11:00,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:11:00,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:11:00" (1/1) ... [2024-01-27 16:11:00,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c843b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:00, skipping insertion in model container [2024-01-27 16:11:00,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:11:00" (1/1) ... [2024-01-27 16:11:01,009 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:11:01,120 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/mix017.oepc.i[945,958] [2024-01-27 16:11:01,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:11:01,302 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:11:01,311 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/mix017.oepc.i[945,958] [2024-01-27 16:11:01,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:11:01,391 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:11:01,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01 WrapperNode [2024-01-27 16:11:01,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:11:01,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:11:01,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:11:01,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:11:01,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,522 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2024-01-27 16:11:01,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:11:01,523 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:11:01,523 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:11:01,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:11:01,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,560 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 16:11:01,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,567 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,577 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:11:01,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:11:01,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:11:01,580 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:11:01,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (1/1) ... [2024-01-27 16:11:01,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:11:01,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:11:01,633 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 16:11:01,640 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 16:11:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:11:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:11:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:11:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:11:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:11:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 16:11:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:11:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:11:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:11:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-27 16:11:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-27 16:11:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-27 16:11:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-27 16:11:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-27 16:11:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-27 16:11:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-27 16:11:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-27 16:11:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:11:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:11:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:11:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:11:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:11:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 16:11:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:11:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:11:01,671 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 16:11:01,772 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:11:01,773 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:11:02,025 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:11:02,025 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:11:02,175 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:11:02,175 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:11:02,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:11:02 BoogieIcfgContainer [2024-01-27 16:11:02,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:11:02,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:11:02,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:11:02,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:11:02,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:11:00" (1/3) ... [2024-01-27 16:11:02,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bab2c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:11:02, skipping insertion in model container [2024-01-27 16:11:02,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:11:01" (2/3) ... [2024-01-27 16:11:02,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bab2c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:11:02, skipping insertion in model container [2024-01-27 16:11:02,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:11:02" (3/3) ... [2024-01-27 16:11:02,182 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017.oepc.i [2024-01-27 16:11:02,188 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:11:02,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:11:02,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-27 16:11:02,195 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:11:02,236 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 16:11:02,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:11:02,312 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-01-27 16:11:02,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:11:02,316 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 89 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 16:11:02,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-01-27 16:11:02,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-01-27 16:11:02,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:11:02,335 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;@fb8192e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:11:02,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:11:02,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:11:02,339 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-01-27 16:11:02,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:11:02,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:02,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 16:11:02,340 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 16:11:02,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:02,343 INFO L85 PathProgramCache]: Analyzing trace with hash 12303735, now seen corresponding path program 1 times [2024-01-27 16:11:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:02,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625415906] [2024-01-27 16:11:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:02,639 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 16:11:02,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:02,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625415906] [2024-01-27 16:11:02,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625415906] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:02,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:02,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 16:11:02,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955192669] [2024-01-27 16:11:02,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:02,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:11:02,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:02,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:11:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:11:02,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 49 [2024-01-27 16:11:02,669 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 16:11:02,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:02,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 49 [2024-01-27 16:11:02,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:03,222 INFO L124 PetriNetUnfolderBase]: 2495/4136 cut-off events. [2024-01-27 16:11:03,222 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-01-27 16:11:03,230 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 28330 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 16:11:03,245 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 37 selfloop transitions, 2 changer transitions 2/61 dead transitions. [2024-01-27 16:11:03,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-01-27 16:11:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:11:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:11:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-01-27 16:11:03,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7891156462585034 [2024-01-27 16:11:03,256 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 116 transitions. [2024-01-27 16:11:03,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-01-27 16:11:03,261 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 16:11:03,265 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-01-27 16:11:03,267 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 16:11:03,270 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-01-27 16:11:03,270 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-01-27 16:11:03,270 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 16:11:03,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:03,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:11:03,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:11:03,271 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 16:11:03,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:03,272 INFO L85 PathProgramCache]: Analyzing trace with hash 43347353, now seen corresponding path program 1 times [2024-01-27 16:11:03,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:03,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716238281] [2024-01-27 16:11:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:03,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:03,513 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 16:11:03,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:03,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716238281] [2024-01-27 16:11:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716238281] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:03,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:03,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:11:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141819543] [2024-01-27 16:11:03,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:03,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:11:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:03,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:11:03,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:11:03,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-27 16:11:03,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:03,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:03,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-27 16:11:03,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:05,235 INFO L124 PetriNetUnfolderBase]: 13249/18980 cut-off events. [2024-01-27 16:11:05,236 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2024-01-27 16:11:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37966 conditions, 18980 events. 13249/18980 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 125382 event pairs, 6592 based on Foata normal form. 0/18568 useless extension candidates. Maximal degree in co-relation 37956. Up to 11671 conditions per place. [2024-01-27 16:11:05,317 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 37 selfloop transitions, 5 changer transitions 58/113 dead transitions. [2024-01-27 16:11:05,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 113 transitions, 456 flow [2024-01-27 16:11:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:11:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:11:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 238 transitions. [2024-01-27 16:11:05,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-01-27 16:11:05,320 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 8 states and 238 transitions. [2024-01-27 16:11:05,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 113 transitions, 456 flow [2024-01-27 16:11:05,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 113 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 16:11:05,322 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 147 flow [2024-01-27 16:11:05,323 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=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=147, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-01-27 16:11:05,323 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2024-01-27 16:11:05,323 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 147 flow [2024-01-27 16:11:05,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 16:11:05,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:05,324 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 16:11:05,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 16:11:05,324 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 16:11:05,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash 567506356, now seen corresponding path program 1 times [2024-01-27 16:11:05,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:05,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101634060] [2024-01-27 16:11:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:05,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:05,530 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 16:11:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101634060] [2024-01-27 16:11:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101634060] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:05,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:11:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780216647] [2024-01-27 16:11:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:05,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:11:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:05,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:11:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:11:05,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-01-27 16:11:05,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 16:11:05,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:05,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-01-27 16:11:05,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:06,863 INFO L124 PetriNetUnfolderBase]: 10019/14518 cut-off events. [2024-01-27 16:11:06,864 INFO L125 PetriNetUnfolderBase]: For 14254/14264 co-relation queries the response was YES. [2024-01-27 16:11:06,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39451 conditions, 14518 events. 10019/14518 cut-off events. For 14254/14264 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 92072 event pairs, 1683 based on Foata normal form. 390/14823 useless extension candidates. Maximal degree in co-relation 39436. Up to 9073 conditions per place. [2024-01-27 16:11:06,937 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 42 selfloop transitions, 3 changer transitions 51/109 dead transitions. [2024-01-27 16:11:06,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 579 flow [2024-01-27 16:11:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:11:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:11:06,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-01-27 16:11:06,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6209912536443148 [2024-01-27 16:11:06,942 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 147 flow. Second operand 7 states and 213 transitions. [2024-01-27 16:11:06,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 579 flow [2024-01-27 16:11:07,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 109 transitions, 566 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-27 16:11:07,048 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 157 flow [2024-01-27 16:11:07,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=157, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2024-01-27 16:11:07,050 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2024-01-27 16:11:07,050 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 157 flow [2024-01-27 16:11:07,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 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 16:11:07,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:07,050 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 16:11:07,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 16:11:07,051 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 16:11:07,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:07,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1008593799, now seen corresponding path program 1 times [2024-01-27 16:11:07,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:07,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960517179] [2024-01-27 16:11:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:07,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:07,204 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 16:11:07,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:07,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960517179] [2024-01-27 16:11:07,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960517179] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:07,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:07,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 16:11:07,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169201667] [2024-01-27 16:11:07,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:07,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 16:11:07,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 16:11:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 16:11:07,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:07,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 157 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 16:11:07,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:07,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:07,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:08,911 INFO L124 PetriNetUnfolderBase]: 13591/20365 cut-off events. [2024-01-27 16:11:08,911 INFO L125 PetriNetUnfolderBase]: For 9624/9798 co-relation queries the response was YES. [2024-01-27 16:11:08,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46526 conditions, 20365 events. 13591/20365 cut-off events. For 9624/9798 co-relation queries the response was YES. Maximal size of possible extension queue 1171. Compared 144044 event pairs, 2468 based on Foata normal form. 681/20271 useless extension candidates. Maximal degree in co-relation 46507. Up to 9547 conditions per place. [2024-01-27 16:11:09,037 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 53 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-01-27 16:11:09,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 77 transitions, 345 flow [2024-01-27 16:11:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 16:11:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 16:11:09,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-27 16:11:09,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2024-01-27 16:11:09,039 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 157 flow. Second operand 4 states and 137 transitions. [2024-01-27 16:11:09,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 77 transitions, 345 flow [2024-01-27 16:11:09,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 331 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-27 16:11:09,148 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 189 flow [2024-01-27 16:11:09,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-01-27 16:11:09,149 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-01-27 16:11:09,149 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 189 flow [2024-01-27 16:11:09,149 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 16:11:09,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:09,149 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 16:11:09,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:11:09,150 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 16:11:09,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:09,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1915457126, now seen corresponding path program 1 times [2024-01-27 16:11:09,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:09,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514674948] [2024-01-27 16:11:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:09,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:09,263 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 16:11:09,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:09,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514674948] [2024-01-27 16:11:09,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514674948] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:09,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:09,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 16:11:09,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138392321] [2024-01-27 16:11:09,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:09,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 16:11:09,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:09,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 16:11:09,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 16:11:09,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:09,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 189 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 16:11:09,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:09,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:09,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:10,595 INFO L124 PetriNetUnfolderBase]: 11180/16762 cut-off events. [2024-01-27 16:11:10,595 INFO L125 PetriNetUnfolderBase]: For 5966/6074 co-relation queries the response was YES. [2024-01-27 16:11:10,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40643 conditions, 16762 events. 11180/16762 cut-off events. For 5966/6074 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 113575 event pairs, 1459 based on Foata normal form. 602/16718 useless extension candidates. Maximal degree in co-relation 40626. Up to 5576 conditions per place. [2024-01-27 16:11:10,668 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 69 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2024-01-27 16:11:10,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 97 transitions, 470 flow [2024-01-27 16:11:10,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 16:11:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 16:11:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-01-27 16:11:10,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7183673469387755 [2024-01-27 16:11:10,673 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 189 flow. Second operand 5 states and 176 transitions. [2024-01-27 16:11:10,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 97 transitions, 470 flow [2024-01-27 16:11:10,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 467 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 16:11:10,676 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 254 flow [2024-01-27 16:11:10,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-01-27 16:11:10,678 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2024-01-27 16:11:10,678 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 254 flow [2024-01-27 16:11:10,679 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 16:11:10,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:10,682 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 16:11:10,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:11:10,683 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 16:11:10,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:10,683 INFO L85 PathProgramCache]: Analyzing trace with hash -995627168, now seen corresponding path program 1 times [2024-01-27 16:11:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:10,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153810918] [2024-01-27 16:11:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:10,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:11,169 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 16:11:11,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:11,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153810918] [2024-01-27 16:11:11,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153810918] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:11,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:11,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-27 16:11:11,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639976279] [2024-01-27 16:11:11,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:11,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:11:11,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:11,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:11:11,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:11:11,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:11:11,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 254 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 16:11:11,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:11,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:11:11,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:13,595 INFO L124 PetriNetUnfolderBase]: 15354/25250 cut-off events. [2024-01-27 16:11:13,596 INFO L125 PetriNetUnfolderBase]: For 17215/21526 co-relation queries the response was YES. [2024-01-27 16:11:13,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65260 conditions, 25250 events. 15354/25250 cut-off events. For 17215/21526 co-relation queries the response was YES. Maximal size of possible extension queue 1457. Compared 209616 event pairs, 6189 based on Foata normal form. 385/23738 useless extension candidates. Maximal degree in co-relation 65240. Up to 10535 conditions per place. [2024-01-27 16:11:13,735 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 83 selfloop transitions, 18 changer transitions 12/144 dead transitions. [2024-01-27 16:11:13,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 144 transitions, 738 flow [2024-01-27 16:11:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 16:11:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 16:11:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2024-01-27 16:11:13,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-01-27 16:11:13,737 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 254 flow. Second operand 10 states and 325 transitions. [2024-01-27 16:11:13,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 144 transitions, 738 flow [2024-01-27 16:11:13,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 144 transitions, 723 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-27 16:11:13,744 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 381 flow [2024-01-27 16:11:13,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-01-27 16:11:13,744 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-01-27 16:11:13,745 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 381 flow [2024-01-27 16:11:13,745 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 16:11:13,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:13,745 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 16:11:13,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 16:11:13,745 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 16:11:13,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:13,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1632421996, now seen corresponding path program 2 times [2024-01-27 16:11:13,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:13,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613687614] [2024-01-27 16:11:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:13,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:13,909 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 16:11:13,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613687614] [2024-01-27 16:11:13,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613687614] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:13,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 16:11:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147935473] [2024-01-27 16:11:13,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:13,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:11:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:13,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:11:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:11:13,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:13,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 381 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 16:11:13,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:13,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:13,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:16,184 INFO L124 PetriNetUnfolderBase]: 19181/28180 cut-off events. [2024-01-27 16:11:16,184 INFO L125 PetriNetUnfolderBase]: For 49744/51126 co-relation queries the response was YES. [2024-01-27 16:11:16,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93230 conditions, 28180 events. 19181/28180 cut-off events. For 49744/51126 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 191301 event pairs, 1461 based on Foata normal form. 919/28223 useless extension candidates. Maximal degree in co-relation 93203. Up to 9798 conditions per place. [2024-01-27 16:11:16,389 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 129 selfloop transitions, 14 changer transitions 12/174 dead transitions. [2024-01-27 16:11:16,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 174 transitions, 1155 flow [2024-01-27 16:11:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:11:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:11:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-01-27 16:11:16,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7244897959183674 [2024-01-27 16:11:16,390 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 381 flow. Second operand 6 states and 213 transitions. [2024-01-27 16:11:16,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 174 transitions, 1155 flow [2024-01-27 16:11:16,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 174 transitions, 1149 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-27 16:11:16,428 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 440 flow [2024-01-27 16:11:16,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2024-01-27 16:11:16,428 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 26 predicate places. [2024-01-27 16:11:16,428 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 440 flow [2024-01-27 16:11:16,429 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 16:11:16,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:16,429 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 16:11:16,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 16:11:16,429 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 16:11:16,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:16,430 INFO L85 PathProgramCache]: Analyzing trace with hash -831031131, now seen corresponding path program 1 times [2024-01-27 16:11:16,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:16,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100950137] [2024-01-27 16:11:16,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:16,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:17,270 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 16:11:17,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:17,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100950137] [2024-01-27 16:11:17,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100950137] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:17,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:17,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-27 16:11:17,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26816720] [2024-01-27 16:11:17,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:17,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 16:11:17,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:17,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 16:11:17,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-01-27 16:11:17,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-01-27 16:11:17,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 440 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 16:11:17,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:17,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-01-27 16:11:17,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:19,912 INFO L124 PetriNetUnfolderBase]: 14700/25133 cut-off events. [2024-01-27 16:11:19,913 INFO L125 PetriNetUnfolderBase]: For 53550/62773 co-relation queries the response was YES. [2024-01-27 16:11:19,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80913 conditions, 25133 events. 14700/25133 cut-off events. For 53550/62773 co-relation queries the response was YES. Maximal size of possible extension queue 1599. Compared 217818 event pairs, 5495 based on Foata normal form. 1001/23603 useless extension candidates. Maximal degree in co-relation 80884. Up to 6627 conditions per place. [2024-01-27 16:11:20,067 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 95 selfloop transitions, 12 changer transitions 17/160 dead transitions. [2024-01-27 16:11:20,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 160 transitions, 1086 flow [2024-01-27 16:11:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 16:11:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 16:11:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-01-27 16:11:20,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-01-27 16:11:20,069 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 440 flow. Second operand 8 states and 278 transitions. [2024-01-27 16:11:20,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 160 transitions, 1086 flow [2024-01-27 16:11:20,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 160 transitions, 1045 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-01-27 16:11:20,250 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 482 flow [2024-01-27 16:11:20,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-01-27 16:11:20,251 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-01-27 16:11:20,252 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 482 flow [2024-01-27 16:11:20,252 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 16:11:20,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:20,252 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 16:11:20,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:11:20,252 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 16:11:20,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:20,253 INFO L85 PathProgramCache]: Analyzing trace with hash 477780335, now seen corresponding path program 2 times [2024-01-27 16:11:20,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:20,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181883975] [2024-01-27 16:11:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:20,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:20,414 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 16:11:20,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181883975] [2024-01-27 16:11:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181883975] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:20,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:20,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:11:20,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99562814] [2024-01-27 16:11:20,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:20,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:11:20,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:20,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:11:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:11:20,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:20,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 482 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 16:11:20,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:20,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:20,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:24,910 INFO L124 PetriNetUnfolderBase]: 27637/46056 cut-off events. [2024-01-27 16:11:24,910 INFO L125 PetriNetUnfolderBase]: For 104122/115571 co-relation queries the response was YES. [2024-01-27 16:11:25,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150230 conditions, 46056 events. 27637/46056 cut-off events. For 104122/115571 co-relation queries the response was YES. Maximal size of possible extension queue 3033. Compared 423385 event pairs, 10379 based on Foata normal form. 1314/42395 useless extension candidates. Maximal degree in co-relation 150197. Up to 16181 conditions per place. [2024-01-27 16:11:25,461 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 115 selfloop transitions, 3 changer transitions 26/177 dead transitions. [2024-01-27 16:11:25,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 177 transitions, 1357 flow [2024-01-27 16:11:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:11:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:11:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-01-27 16:11:25,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2024-01-27 16:11:25,463 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 482 flow. Second operand 6 states and 198 transitions. [2024-01-27 16:11:25,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 177 transitions, 1357 flow [2024-01-27 16:11:26,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 177 transitions, 1267 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-01-27 16:11:26,114 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 486 flow [2024-01-27 16:11:26,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=486, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2024-01-27 16:11:26,115 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-01-27 16:11:26,115 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 486 flow [2024-01-27 16:11:26,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 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 16:11:26,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:26,115 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 16:11:26,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 16:11:26,115 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 16:11:26,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:26,116 INFO L85 PathProgramCache]: Analyzing trace with hash 436430329, now seen corresponding path program 3 times [2024-01-27 16:11:26,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:26,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821870957] [2024-01-27 16:11:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:26,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:26,252 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 16:11:26,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:26,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821870957] [2024-01-27 16:11:26,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821870957] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:26,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:26,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:11:26,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354073854] [2024-01-27 16:11:26,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:26,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:11:26,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:26,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:11:26,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:11:26,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:26,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 486 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 16:11:26,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:26,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:26,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:31,770 INFO L124 PetriNetUnfolderBase]: 40908/59791 cut-off events. [2024-01-27 16:11:31,770 INFO L125 PetriNetUnfolderBase]: For 147059/151139 co-relation queries the response was YES. [2024-01-27 16:11:32,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211706 conditions, 59791 events. 40908/59791 cut-off events. For 147059/151139 co-relation queries the response was YES. Maximal size of possible extension queue 3068. Compared 448594 event pairs, 3551 based on Foata normal form. 1026/59267 useless extension candidates. Maximal degree in co-relation 211674. Up to 23102 conditions per place. [2024-01-27 16:11:32,141 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 102 selfloop transitions, 18 changer transitions 32/172 dead transitions. [2024-01-27 16:11:32,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 172 transitions, 1242 flow [2024-01-27 16:11:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 16:11:32,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 16:11:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-01-27 16:11:32,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647230320699709 [2024-01-27 16:11:32,143 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 486 flow. Second operand 7 states and 228 transitions. [2024-01-27 16:11:32,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 172 transitions, 1242 flow [2024-01-27 16:11:33,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 172 transitions, 1210 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-01-27 16:11:33,610 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 471 flow [2024-01-27 16:11:33,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=471, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2024-01-27 16:11:33,611 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2024-01-27 16:11:33,611 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 471 flow [2024-01-27 16:11:33,611 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 16:11:33,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:33,611 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 16:11:33,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 16:11:33,612 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:33,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1094321506, now seen corresponding path program 1 times [2024-01-27 16:11:33,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:33,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982244519] [2024-01-27 16:11:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:33,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:33,765 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 16:11:33,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:33,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982244519] [2024-01-27 16:11:33,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982244519] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:33,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:33,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:11:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250846089] [2024-01-27 16:11:33,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:33,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:11:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:11:33,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:11:33,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:33,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 471 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 16:11:33,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:33,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:33,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:11:37,841 INFO L124 PetriNetUnfolderBase]: 25145/43020 cut-off events. [2024-01-27 16:11:37,842 INFO L125 PetriNetUnfolderBase]: For 114621/131192 co-relation queries the response was YES. [2024-01-27 16:11:38,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144279 conditions, 43020 events. 25145/43020 cut-off events. For 114621/131192 co-relation queries the response was YES. Maximal size of possible extension queue 3534. Compared 418024 event pairs, 6347 based on Foata normal form. 846/38440 useless extension candidates. Maximal degree in co-relation 144247. Up to 13990 conditions per place. [2024-01-27 16:11:38,127 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 70 selfloop transitions, 3 changer transitions 14/123 dead transitions. [2024-01-27 16:11:38,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 888 flow [2024-01-27 16:11:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:11:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:11:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-01-27 16:11:38,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5884353741496599 [2024-01-27 16:11:38,129 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 471 flow. Second operand 6 states and 173 transitions. [2024-01-27 16:11:38,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 888 flow [2024-01-27 16:11:39,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 801 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-01-27 16:11:39,436 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 427 flow [2024-01-27 16:11:39,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-01-27 16:11:39,437 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-01-27 16:11:39,437 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 427 flow [2024-01-27 16:11:39,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 16:11:39,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:11:39,437 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 16:11:39,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 16:11:39,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:11:39,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:11:39,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1014684046, now seen corresponding path program 2 times [2024-01-27 16:11:39,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:11:39,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848042019] [2024-01-27 16:11:39,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:11:39,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:11:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:11:39,594 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 16:11:39,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:11:39,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848042019] [2024-01-27 16:11:39,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848042019] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:11:39,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:11:39,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-27 16:11:39,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049101822] [2024-01-27 16:11:39,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:11:39,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 16:11:39,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:11:39,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 16:11:39,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-27 16:11:39,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-01-27 16:11:39,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 427 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 16:11:39,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:11:39,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-01-27 16:11:39,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand