./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/weaver/popl20-counter-determinism.wvr.c -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 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:49:20,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:49:20,170 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:49:20,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:49:20,177 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:49:20,205 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:49:20,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:49:20,207 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:49:20,208 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:49:20,211 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:49:20,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:49:20,211 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:49:20,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:49:20,213 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:49:20,213 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:49:20,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:49:20,214 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:49:20,214 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:49:20,214 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:49:20,214 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:49:20,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:49:20,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:49:20,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:49:20,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:49:20,216 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:49:20,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:49:20,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:49:20,217 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:49:20,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:49:20,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:49:20,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:49:20,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:49:20,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:49:20,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:49:20,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:49:20,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:49:20,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:49:20,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:49:20,227 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:49:20,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:49:20,227 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:49:20,227 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:49:20,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:49:20,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 [2024-06-27 16:49:20,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:49:20,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:49:20,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:49:20,464 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:49:20,464 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:49:20,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2024-06-27 16:49:21,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:49:21,667 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:49:21,669 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2024-06-27 16:49:21,697 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828d25014/8a3739b5c5fa4bc2b65d914bffa6cefd/FLAG6847b3faf [2024-06-27 16:49:21,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/828d25014/8a3739b5c5fa4bc2b65d914bffa6cefd [2024-06-27 16:49:21,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:49:21,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:49:21,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:49:21,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:49:21,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:49:21,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:49:21" (1/1) ... [2024-06-27 16:49:21,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1861c5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:21, skipping insertion in model container [2024-06-27 16:49:21,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:49:21" (1/1) ... [2024-06-27 16:49:21,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:49:21,984 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c[2528,2541] [2024-06-27 16:49:22,006 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:49:22,012 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:49:22,026 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c[2528,2541] [2024-06-27 16:49:22,028 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:49:22,039 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:49:22,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22 WrapperNode [2024-06-27 16:49:22,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:49:22,040 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:49:22,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:49:22,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:49:22,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,075 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 96 [2024-06-27 16:49:22,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:49:22,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:49:22,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:49:22,076 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:49:22,088 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,095 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,105 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 16:49:22,105 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:49:22,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:49:22,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:49:22,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:49:22,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (1/1) ... [2024-06-27 16:49:22,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:49:22,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:49:22,155 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) [2024-06-27 16:49:22,157 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 [2024-06-27 16:49:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:49:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:49:22,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:49:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:49:22,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:49:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:49:22,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:49:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 16:49:22,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 16:49:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:49:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:49:22,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:49:22,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:49:22,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:49:22,191 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:49:22,294 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:49:22,295 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:49:22,493 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:49:22,493 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:49:22,576 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:49:22,576 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-27 16:49:22,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:49:22 BoogieIcfgContainer [2024-06-27 16:49:22,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:49:22,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:49:22,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:49:22,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:49:22,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:49:21" (1/3) ... [2024-06-27 16:49:22,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685e6ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:49:22, skipping insertion in model container [2024-06-27 16:49:22,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:49:22" (2/3) ... [2024-06-27 16:49:22,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685e6ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:49:22, skipping insertion in model container [2024-06-27 16:49:22,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:49:22" (3/3) ... [2024-06-27 16:49:22,583 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-06-27 16:49:22,589 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:49:22,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:49:22,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:49:22,596 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:49:22,633 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 16:49:22,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-06-27 16:49:22,685 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-06-27 16:49:22,685 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 16:49:22,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-27 16:49:22,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-06-27 16:49:22,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-06-27 16:49:22,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:49:22,703 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;@63fbd432, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:49:22,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 16:49:22,753 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:49:22,754 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-06-27 16:49:22,754 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 16:49:22,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:22,755 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] [2024-06-27 16:49:22,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:22,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:22,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1288392351, now seen corresponding path program 1 times [2024-06-27 16:49:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:22,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148213545] [2024-06-27 16:49:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:22,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:23,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:23,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148213545] [2024-06-27 16:49:23,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148213545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:23,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:23,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:49:23,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493375240] [2024-06-27 16:49:23,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:23,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:49:23,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:23,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:49:23,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:49:23,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 16:49:23,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-27 16:49:23,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:23,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 16:49:23,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:23,559 INFO L124 PetriNetUnfolderBase]: 3331/4536 cut-off events. [2024-06-27 16:49:23,559 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2024-06-27 16:49:23,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9279 conditions, 4536 events. 3331/4536 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 19461 event pairs, 587 based on Foata normal form. 1/4497 useless extension candidates. Maximal degree in co-relation 8229. Up to 3534 conditions per place. [2024-06-27 16:49:23,585 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 47 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-06-27 16:49:23,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 267 flow [2024-06-27 16:49:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:49:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:49:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-27 16:49:23,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-27 16:49:23,597 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-06-27 16:49:23,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 267 flow [2024-06-27 16:49:23,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 16:49:23,609 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-06-27 16:49:23,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-06-27 16:49:23,613 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-06-27 16:49:23,613 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-06-27 16:49:23,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-06-27 16:49:23,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:23,615 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] [2024-06-27 16:49:23,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:49:23,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:23,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1256489819, now seen corresponding path program 1 times [2024-06-27 16:49:23,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:23,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583243849] [2024-06-27 16:49:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:23,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:23,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:23,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:23,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583243849] [2024-06-27 16:49:23,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583243849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:23,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:23,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:23,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401922259] [2024-06-27 16:49:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:23,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:23,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:23,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:23,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:23,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:23,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:23,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:23,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:23,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:24,448 INFO L124 PetriNetUnfolderBase]: 7596/10156 cut-off events. [2024-06-27 16:49:24,449 INFO L125 PetriNetUnfolderBase]: For 1726/1746 co-relation queries the response was YES. [2024-06-27 16:49:24,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23047 conditions, 10156 events. 7596/10156 cut-off events. For 1726/1746 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 50504 event pairs, 2230 based on Foata normal form. 0/9513 useless extension candidates. Maximal degree in co-relation 3481. Up to 5148 conditions per place. [2024-06-27 16:49:24,538 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 94 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-06-27 16:49:24,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 108 transitions, 516 flow [2024-06-27 16:49:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 16:49:24,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.655 [2024-06-27 16:49:24,548 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 131 transitions. [2024-06-27 16:49:24,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 108 transitions, 516 flow [2024-06-27 16:49:24,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 108 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:24,552 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2024-06-27 16:49:24,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-06-27 16:49:24,553 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-06-27 16:49:24,553 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2024-06-27 16:49:24,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:24,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:24,554 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] [2024-06-27 16:49:24,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:49:24,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:24,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:24,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2057066661, now seen corresponding path program 2 times [2024-06-27 16:49:24,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:24,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608520129] [2024-06-27 16:49:24,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:24,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608520129] [2024-06-27 16:49:24,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608520129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:24,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:24,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:49:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473339822] [2024-06-27 16:49:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:24,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:49:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:49:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:49:24,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:24,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-06-27 16:49:24,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:24,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:24,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:25,541 INFO L124 PetriNetUnfolderBase]: 10046/13567 cut-off events. [2024-06-27 16:49:25,541 INFO L125 PetriNetUnfolderBase]: For 5892/5892 co-relation queries the response was YES. [2024-06-27 16:49:25,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35601 conditions, 13567 events. 10046/13567 cut-off events. For 5892/5892 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 71922 event pairs, 1145 based on Foata normal form. 288/13797 useless extension candidates. Maximal degree in co-relation 17061. Up to 3538 conditions per place. [2024-06-27 16:49:25,611 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 143 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2024-06-27 16:49:25,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 160 transitions, 824 flow [2024-06-27 16:49:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:49:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:49:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 16:49:25,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-06-27 16:49:25,613 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 7 states and 192 transitions. [2024-06-27 16:49:25,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 160 transitions, 824 flow [2024-06-27 16:49:25,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 160 transitions, 824 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:49:25,625 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 260 flow [2024-06-27 16:49:25,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-06-27 16:49:25,626 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2024-06-27 16:49:25,626 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 260 flow [2024-06-27 16:49:25,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-06-27 16:49:25,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:25,627 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] [2024-06-27 16:49:25,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:49:25,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:25,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -730867066, now seen corresponding path program 1 times [2024-06-27 16:49:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:25,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931128410] [2024-06-27 16:49:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:25,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:25,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931128410] [2024-06-27 16:49:25,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931128410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:25,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:25,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:49:25,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777277682] [2024-06-27 16:49:25,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:25,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:49:25,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:49:25,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:49:25,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 16:49:25,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-06-27 16:49:25,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:25,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 16:49:25,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:26,250 INFO L124 PetriNetUnfolderBase]: 6884/9422 cut-off events. [2024-06-27 16:49:26,250 INFO L125 PetriNetUnfolderBase]: For 12936/12970 co-relation queries the response was YES. [2024-06-27 16:49:26,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28422 conditions, 9422 events. 6884/9422 cut-off events. For 12936/12970 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 47380 event pairs, 2587 based on Foata normal form. 352/9648 useless extension candidates. Maximal degree in co-relation 19597. Up to 5747 conditions per place. [2024-06-27 16:49:26,293 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 68 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-06-27 16:49:26,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 479 flow [2024-06-27 16:49:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:49:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:49:26,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-27 16:49:26,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-06-27 16:49:26,296 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 260 flow. Second operand 3 states and 82 transitions. [2024-06-27 16:49:26,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 479 flow [2024-06-27 16:49:26,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 471 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:26,312 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 265 flow [2024-06-27 16:49:26,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-27 16:49:26,314 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2024-06-27 16:49:26,314 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 265 flow [2024-06-27 16:49:26,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-06-27 16:49:26,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:26,314 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] [2024-06-27 16:49:26,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:49:26,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:26,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash 134795953, now seen corresponding path program 3 times [2024-06-27 16:49:26,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285426401] [2024-06-27 16:49:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:26,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:26,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:26,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285426401] [2024-06-27 16:49:26,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285426401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:26,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:26,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:26,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999724246] [2024-06-27 16:49:26,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:26,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:26,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:26,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:26,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:26,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:26,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:26,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:26,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:26,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:27,271 INFO L124 PetriNetUnfolderBase]: 10486/14428 cut-off events. [2024-06-27 16:49:27,272 INFO L125 PetriNetUnfolderBase]: For 18882/18902 co-relation queries the response was YES. [2024-06-27 16:49:27,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43953 conditions, 14428 events. 10486/14428 cut-off events. For 18882/18902 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 77749 event pairs, 3394 based on Foata normal form. 62/14322 useless extension candidates. Maximal degree in co-relation 31554. Up to 7316 conditions per place. [2024-06-27 16:49:27,344 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 102 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2024-06-27 16:49:27,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 123 transitions, 779 flow [2024-06-27 16:49:27,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:27,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:27,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 16:49:27,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 16:49:27,346 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 265 flow. Second operand 5 states and 130 transitions. [2024-06-27 16:49:27,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 123 transitions, 779 flow [2024-06-27 16:49:27,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 123 transitions, 770 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:27,388 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 387 flow [2024-06-27 16:49:27,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-06-27 16:49:27,389 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2024-06-27 16:49:27,389 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 387 flow [2024-06-27 16:49:27,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:27,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:27,390 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] [2024-06-27 16:49:27,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:49:27,390 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:27,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:27,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1656382419, now seen corresponding path program 4 times [2024-06-27 16:49:27,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:27,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610899295] [2024-06-27 16:49:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:27,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:27,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:27,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:27,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610899295] [2024-06-27 16:49:27,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610899295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:27,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:27,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:27,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670084368] [2024-06-27 16:49:27,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:27,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:27,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:27,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:27,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:27,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:27,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:27,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:27,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:27,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:28,339 INFO L124 PetriNetUnfolderBase]: 10738/14702 cut-off events. [2024-06-27 16:49:28,340 INFO L125 PetriNetUnfolderBase]: For 29691/29691 co-relation queries the response was YES. [2024-06-27 16:49:28,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48348 conditions, 14702 events. 10738/14702 cut-off events. For 29691/29691 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 79262 event pairs, 2805 based on Foata normal form. 62/14666 useless extension candidates. Maximal degree in co-relation 32769. Up to 5854 conditions per place. [2024-06-27 16:49:28,405 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 112 selfloop transitions, 14 changer transitions 0/130 dead transitions. [2024-06-27 16:49:28,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 130 transitions, 876 flow [2024-06-27 16:49:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-27 16:49:28,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.655 [2024-06-27 16:49:28,406 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 387 flow. Second operand 5 states and 131 transitions. [2024-06-27 16:49:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 130 transitions, 876 flow [2024-06-27 16:49:28,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 130 transitions, 860 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-27 16:49:28,528 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 430 flow [2024-06-27 16:49:28,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-06-27 16:49:28,528 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2024-06-27 16:49:28,528 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 430 flow [2024-06-27 16:49:28,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:28,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:28,529 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] [2024-06-27 16:49:28,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:49:28,529 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:28,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash 214444721, now seen corresponding path program 1 times [2024-06-27 16:49:28,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:28,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705650860] [2024-06-27 16:49:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:28,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:28,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705650860] [2024-06-27 16:49:28,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705650860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:28,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:28,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:28,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29632129] [2024-06-27 16:49:28,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:28,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:28,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:28,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:28,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:28,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:28,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 430 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:28,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:28,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:28,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:29,746 INFO L124 PetriNetUnfolderBase]: 11529/15991 cut-off events. [2024-06-27 16:49:29,746 INFO L125 PetriNetUnfolderBase]: For 42031/42055 co-relation queries the response was YES. [2024-06-27 16:49:29,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53989 conditions, 15991 events. 11529/15991 cut-off events. For 42031/42055 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 90367 event pairs, 3652 based on Foata normal form. 3/15076 useless extension candidates. Maximal degree in co-relation 38705. Up to 8332 conditions per place. [2024-06-27 16:49:29,822 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 102 selfloop transitions, 17 changer transitions 0/124 dead transitions. [2024-06-27 16:49:29,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 124 transitions, 867 flow [2024-06-27 16:49:29,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:29,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:29,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 16:49:29,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 16:49:29,824 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 430 flow. Second operand 5 states and 130 transitions. [2024-06-27 16:49:29,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 124 transitions, 867 flow [2024-06-27 16:49:29,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 124 transitions, 836 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:49:29,913 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 459 flow [2024-06-27 16:49:29,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-06-27 16:49:29,914 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-06-27 16:49:29,914 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 459 flow [2024-06-27 16:49:29,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:29,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:29,914 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] [2024-06-27 16:49:29,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 16:49:29,915 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:29,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -438324993, now seen corresponding path program 5 times [2024-06-27 16:49:29,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:29,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136421415] [2024-06-27 16:49:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:29,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:29,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136421415] [2024-06-27 16:49:29,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136421415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:29,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:29,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:49:29,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426992221] [2024-06-27 16:49:29,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:29,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:49:29,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:49:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:49:29,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:29,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:29,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:29,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:29,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:31,505 INFO L124 PetriNetUnfolderBase]: 17542/23407 cut-off events. [2024-06-27 16:49:31,506 INFO L125 PetriNetUnfolderBase]: For 49754/50951 co-relation queries the response was YES. [2024-06-27 16:49:31,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76943 conditions, 23407 events. 17542/23407 cut-off events. For 49754/50951 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 126166 event pairs, 6023 based on Foata normal form. 350/23582 useless extension candidates. Maximal degree in co-relation 63162. Up to 13144 conditions per place. [2024-06-27 16:49:31,673 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 122 selfloop transitions, 24 changer transitions 0/149 dead transitions. [2024-06-27 16:49:31,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 149 transitions, 1047 flow [2024-06-27 16:49:31,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:49:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:49:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-27 16:49:31,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 16:49:31,676 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 459 flow. Second operand 6 states and 160 transitions. [2024-06-27 16:49:31,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 149 transitions, 1047 flow [2024-06-27 16:49:31,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 149 transitions, 1019 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:49:31,782 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 534 flow [2024-06-27 16:49:31,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=534, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-06-27 16:49:31,784 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 34 predicate places. [2024-06-27 16:49:31,785 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 534 flow [2024-06-27 16:49:31,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:31,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:31,785 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] [2024-06-27 16:49:31,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 16:49:31,785 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:31,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash -280034643, now seen corresponding path program 2 times [2024-06-27 16:49:31,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:31,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045389770] [2024-06-27 16:49:31,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:31,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:31,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045389770] [2024-06-27 16:49:31,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045389770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:31,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:31,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948704896] [2024-06-27 16:49:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:31,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:31,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:31,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:31,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:31,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 534 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-27 16:49:31,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:31,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:31,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:34,471 INFO L124 PetriNetUnfolderBase]: 31616/41945 cut-off events. [2024-06-27 16:49:34,471 INFO L125 PetriNetUnfolderBase]: For 125911/125913 co-relation queries the response was YES. [2024-06-27 16:49:34,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149307 conditions, 41945 events. 31616/41945 cut-off events. For 125911/125913 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 235422 event pairs, 12003 based on Foata normal form. 144/39526 useless extension candidates. Maximal degree in co-relation 106189. Up to 24041 conditions per place. [2024-06-27 16:49:35,068 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 151 selfloop transitions, 26 changer transitions 0/181 dead transitions. [2024-06-27 16:49:35,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 181 transitions, 1798 flow [2024-06-27 16:49:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:35,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 16:49:35,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-06-27 16:49:35,070 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 534 flow. Second operand 5 states and 123 transitions. [2024-06-27 16:49:35,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 181 transitions, 1798 flow [2024-06-27 16:49:35,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 181 transitions, 1654 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 16:49:35,342 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 843 flow [2024-06-27 16:49:35,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=843, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2024-06-27 16:49:35,344 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2024-06-27 16:49:35,344 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 843 flow [2024-06-27 16:49:35,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-27 16:49:35,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:35,345 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] [2024-06-27 16:49:35,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 16:49:35,345 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:35,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:35,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1126390978, now seen corresponding path program 1 times [2024-06-27 16:49:35,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:35,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94562402] [2024-06-27 16:49:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:35,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:35,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:35,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94562402] [2024-06-27 16:49:35,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94562402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:35,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:35,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:49:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883286529] [2024-06-27 16:49:35,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:35,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:49:35,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:49:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:49:35,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 16:49:35,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 843 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-06-27 16:49:35,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:35,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 16:49:35,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:37,002 INFO L124 PetriNetUnfolderBase]: 19425/26998 cut-off events. [2024-06-27 16:49:37,002 INFO L125 PetriNetUnfolderBase]: For 96517/97826 co-relation queries the response was YES. [2024-06-27 16:49:37,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102988 conditions, 26998 events. 19425/26998 cut-off events. For 96517/97826 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 159540 event pairs, 5895 based on Foata normal form. 511/27103 useless extension candidates. Maximal degree in co-relation 69892. Up to 15819 conditions per place. [2024-06-27 16:49:37,179 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 138 selfloop transitions, 3 changer transitions 2/154 dead transitions. [2024-06-27 16:49:37,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 1770 flow [2024-06-27 16:49:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:49:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:49:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-27 16:49:37,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 16:49:37,180 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 843 flow. Second operand 3 states and 78 transitions. [2024-06-27 16:49:37,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 1770 flow [2024-06-27 16:49:37,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 154 transitions, 1766 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 16:49:37,536 INFO L231 Difference]: Finished difference. Result has 85 places, 92 transitions, 834 flow [2024-06-27 16:49:37,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=834, PETRI_PLACES=85, PETRI_TRANSITIONS=92} [2024-06-27 16:49:37,537 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 41 predicate places. [2024-06-27 16:49:37,537 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 92 transitions, 834 flow [2024-06-27 16:49:37,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2024-06-27 16:49:37,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:37,538 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] [2024-06-27 16:49:37,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 16:49:37,538 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:37,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:37,539 INFO L85 PathProgramCache]: Analyzing trace with hash -8869403, now seen corresponding path program 3 times [2024-06-27 16:49:37,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:37,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172478835] [2024-06-27 16:49:37,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:37,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:37,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:37,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172478835] [2024-06-27 16:49:37,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172478835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:37,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:37,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168462996] [2024-06-27 16:49:37,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:37,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:37,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:37,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:37,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 92 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:37,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:37,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:37,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:39,800 INFO L124 PetriNetUnfolderBase]: 22313/30463 cut-off events. [2024-06-27 16:49:39,800 INFO L125 PetriNetUnfolderBase]: For 103489/103740 co-relation queries the response was YES. [2024-06-27 16:49:39,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121765 conditions, 30463 events. 22313/30463 cut-off events. For 103489/103740 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 177251 event pairs, 9606 based on Foata normal form. 55/30352 useless extension candidates. Maximal degree in co-relation 84542. Up to 20625 conditions per place. [2024-06-27 16:49:40,001 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 107 selfloop transitions, 46 changer transitions 1/163 dead transitions. [2024-06-27 16:49:40,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 163 transitions, 1618 flow [2024-06-27 16:49:40,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:40,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-27 16:49:40,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-06-27 16:49:40,004 INFO L175 Difference]: Start difference. First operand has 85 places, 92 transitions, 834 flow. Second operand 5 states and 127 transitions. [2024-06-27 16:49:40,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 163 transitions, 1618 flow [2024-06-27 16:49:40,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 163 transitions, 1594 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 16:49:40,550 INFO L231 Difference]: Finished difference. Result has 89 places, 108 transitions, 1176 flow [2024-06-27 16:49:40,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1176, PETRI_PLACES=89, PETRI_TRANSITIONS=108} [2024-06-27 16:49:40,551 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2024-06-27 16:49:40,551 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 108 transitions, 1176 flow [2024-06-27 16:49:40,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:40,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:40,552 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] [2024-06-27 16:49:40,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 16:49:40,552 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:40,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:40,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1588924297, now seen corresponding path program 4 times [2024-06-27 16:49:40,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:40,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5655231] [2024-06-27 16:49:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:40,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:40,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:40,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5655231] [2024-06-27 16:49:40,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5655231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:40,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:40,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:40,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941400998] [2024-06-27 16:49:40,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:40,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:40,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:40,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:40,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:40,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:40,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 108 transitions, 1176 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:40,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:40,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:40,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:43,291 INFO L124 PetriNetUnfolderBase]: 24984/34114 cut-off events. [2024-06-27 16:49:43,291 INFO L125 PetriNetUnfolderBase]: For 143555/144096 co-relation queries the response was YES. [2024-06-27 16:49:43,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140482 conditions, 34114 events. 24984/34114 cut-off events. For 143555/144096 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 204299 event pairs, 9040 based on Foata normal form. 452/34235 useless extension candidates. Maximal degree in co-relation 100992. Up to 20405 conditions per place. [2024-06-27 16:49:43,528 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 222 selfloop transitions, 19 changer transitions 6/256 dead transitions. [2024-06-27 16:49:43,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 256 transitions, 3312 flow [2024-06-27 16:49:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 16:49:43,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-06-27 16:49:43,529 INFO L175 Difference]: Start difference. First operand has 89 places, 108 transitions, 1176 flow. Second operand 5 states and 123 transitions. [2024-06-27 16:49:43,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 256 transitions, 3312 flow [2024-06-27 16:49:43,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 256 transitions, 3238 flow, removed 37 selfloop flow, removed 0 redundant places. [2024-06-27 16:49:43,930 INFO L231 Difference]: Finished difference. Result has 96 places, 116 transitions, 1263 flow [2024-06-27 16:49:43,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1263, PETRI_PLACES=96, PETRI_TRANSITIONS=116} [2024-06-27 16:49:43,930 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 52 predicate places. [2024-06-27 16:49:43,930 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 116 transitions, 1263 flow [2024-06-27 16:49:43,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:43,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:43,931 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] [2024-06-27 16:49:43,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 16:49:43,931 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:43,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:43,932 INFO L85 PathProgramCache]: Analyzing trace with hash -695077353, now seen corresponding path program 5 times [2024-06-27 16:49:43,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:43,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307853279] [2024-06-27 16:49:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:43,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:43,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307853279] [2024-06-27 16:49:43,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307853279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:43,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:49:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540851890] [2024-06-27 16:49:43,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:43,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:49:43,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:49:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:49:43,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:43,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 116 transitions, 1263 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-06-27 16:49:43,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:43,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:43,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:47,093 INFO L124 PetriNetUnfolderBase]: 28318/38584 cut-off events. [2024-06-27 16:49:47,094 INFO L125 PetriNetUnfolderBase]: For 187812/188506 co-relation queries the response was YES. [2024-06-27 16:49:47,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174628 conditions, 38584 events. 28318/38584 cut-off events. For 187812/188506 co-relation queries the response was YES. Maximal size of possible extension queue 1548. Compared 233193 event pairs, 3619 based on Foata normal form. 384/38621 useless extension candidates. Maximal degree in co-relation 128892. Up to 15408 conditions per place. [2024-06-27 16:49:47,714 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 238 selfloop transitions, 35 changer transitions 16/298 dead transitions. [2024-06-27 16:49:47,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 298 transitions, 3583 flow [2024-06-27 16:49:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 16:49:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 16:49:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 16:49:47,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 16:49:47,716 INFO L175 Difference]: Start difference. First operand has 96 places, 116 transitions, 1263 flow. Second operand 7 states and 175 transitions. [2024-06-27 16:49:47,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 298 transitions, 3583 flow [2024-06-27 16:49:48,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 298 transitions, 3566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 16:49:48,533 INFO L231 Difference]: Finished difference. Result has 105 places, 134 transitions, 1722 flow [2024-06-27 16:49:48,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1722, PETRI_PLACES=105, PETRI_TRANSITIONS=134} [2024-06-27 16:49:48,534 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 61 predicate places. [2024-06-27 16:49:48,534 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 134 transitions, 1722 flow [2024-06-27 16:49:48,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-06-27 16:49:48,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:48,534 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] [2024-06-27 16:49:48,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 16:49:48,535 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:48,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash 493413633, now seen corresponding path program 6 times [2024-06-27 16:49:48,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:48,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147046105] [2024-06-27 16:49:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:48,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147046105] [2024-06-27 16:49:48,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147046105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:48,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:48,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:49:48,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713542595] [2024-06-27 16:49:48,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:48,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:49:48,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:48,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:49:48,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:49:48,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-06-27 16:49:48,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 134 transitions, 1722 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:48,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:48,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-06-27 16:49:48,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:51,868 INFO L124 PetriNetUnfolderBase]: 28607/39999 cut-off events. [2024-06-27 16:49:51,868 INFO L125 PetriNetUnfolderBase]: For 242423/242957 co-relation queries the response was YES. [2024-06-27 16:49:52,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186340 conditions, 39999 events. 28607/39999 cut-off events. For 242423/242957 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 255596 event pairs, 7198 based on Foata normal form. 121/39902 useless extension candidates. Maximal degree in co-relation 144112. Up to 20035 conditions per place. [2024-06-27 16:49:52,222 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 205 selfloop transitions, 18 changer transitions 10/242 dead transitions. [2024-06-27 16:49:52,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 242 transitions, 3057 flow [2024-06-27 16:49:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:49:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:49:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 16:49:52,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-06-27 16:49:52,224 INFO L175 Difference]: Start difference. First operand has 105 places, 134 transitions, 1722 flow. Second operand 5 states and 129 transitions. [2024-06-27 16:49:52,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 242 transitions, 3057 flow [2024-06-27 16:49:54,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 242 transitions, 2993 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 16:49:54,086 INFO L231 Difference]: Finished difference. Result has 109 places, 136 transitions, 1758 flow [2024-06-27 16:49:54,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1758, PETRI_PLACES=109, PETRI_TRANSITIONS=136} [2024-06-27 16:49:54,086 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2024-06-27 16:49:54,087 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 136 transitions, 1758 flow [2024-06-27 16:49:54,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-06-27 16:49:54,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:54,087 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] [2024-06-27 16:49:54,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 16:49:54,087 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:54,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:54,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1859586157, now seen corresponding path program 7 times [2024-06-27 16:49:54,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:54,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090033592] [2024-06-27 16:49:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:54,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:54,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090033592] [2024-06-27 16:49:54,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090033592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:54,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:54,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:49:54,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758391674] [2024-06-27 16:49:54,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:54,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:49:54,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:54,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:49:54,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:49:54,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:54,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 136 transitions, 1758 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:54,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:54,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:54,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:49:58,034 INFO L124 PetriNetUnfolderBase]: 34955/47577 cut-off events. [2024-06-27 16:49:58,035 INFO L125 PetriNetUnfolderBase]: For 310810/310876 co-relation queries the response was YES. [2024-06-27 16:49:58,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223058 conditions, 47577 events. 34955/47577 cut-off events. For 310810/310876 co-relation queries the response was YES. Maximal size of possible extension queue 1775. Compared 286614 event pairs, 14401 based on Foata normal form. 497/47842 useless extension candidates. Maximal degree in co-relation 179499. Up to 29942 conditions per place. [2024-06-27 16:49:58,421 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 142 selfloop transitions, 64 changer transitions 11/221 dead transitions. [2024-06-27 16:49:58,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 221 transitions, 2770 flow [2024-06-27 16:49:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:49:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:49:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 16:49:58,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-27 16:49:58,423 INFO L175 Difference]: Start difference. First operand has 109 places, 136 transitions, 1758 flow. Second operand 6 states and 148 transitions. [2024-06-27 16:49:58,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 221 transitions, 2770 flow [2024-06-27 16:49:59,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 221 transitions, 2719 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 16:49:59,866 INFO L231 Difference]: Finished difference. Result has 114 places, 134 transitions, 1853 flow [2024-06-27 16:49:59,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1853, PETRI_PLACES=114, PETRI_TRANSITIONS=134} [2024-06-27 16:49:59,867 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2024-06-27 16:49:59,867 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 134 transitions, 1853 flow [2024-06-27 16:49:59,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:59,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:49:59,868 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] [2024-06-27 16:49:59,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 16:49:59,868 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:49:59,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:49:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash -966755713, now seen corresponding path program 6 times [2024-06-27 16:49:59,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:49:59,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041916492] [2024-06-27 16:49:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:49:59,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:49:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:49:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:49:59,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:49:59,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041916492] [2024-06-27 16:49:59,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041916492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:49:59,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:49:59,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:49:59,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080780642] [2024-06-27 16:49:59,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:49:59,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:49:59,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:49:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:49:59,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:49:59,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-06-27 16:49:59,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 134 transitions, 1853 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-06-27 16:49:59,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:49:59,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-06-27 16:49:59,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand